point (redirected from boiling point)

point (point)

1. a small area or spot; the sharp end of an object.

2. to approach the surface, like the pus of an abscess, at a definite spot or place.

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point A  a radiographic, cephalometric landmark, determined on the lateral head film; it is the most retruded part of the curved bony outline from the anterior nasal spine to the crest of the maxillary alveolar process.

acupuncture point  acupoint.

point B  a radiographic cephalometric landmark, determined on the lateral head film; it is the most posterior midline point in the concavity between the infradentale and pogonium.

boiling point  the temperature at which a liquid will boil; at sea level, water boils at 100°C (212°F).

cardinal points 

1. the points on the different refracting media of the eye that determine the direction of the entering or emerging light rays.

2. four points within the pelvic inlet—the two sacroiliac articulations and the two iliopectineal eminences.

craniometric point  one of the established points of reference for measurement of the skull.

far point  the remotest point at which an object is clearly seen when the eye is at rest.

point of fixation 

1. the point on which the vision is fixed.

2. the point on the retina on which are focused the rays coming from an object directly regarded.

freezing point  the temperature at which a liquid begins to freeze; for water, 0°C, or 32°F.

isoelectric point  the pH of a solution at which a charged molecule does not migrate in an electric field.

jugal point  the point at the angle formed by the masseteric and maxillary edges of the zygomatic bone.

lacrimal point  the opening on the lacrimal papilla of an eyelid, near the medial angle of the eye, into which tears from the lacrimal lake drain to enter the lacrimal canaliculi.

McBurney point  a point of special tenderness in appendicitis, about one-third the distance between the right anterior superior iliac spine and the umbilicus.

McBurney point.

point of maximal impulse  the point on the chest where the impulse of the left ventricle is felt most strongly, normally in the fifth costal interspace inside the mammillary line. Abbreviated PMI.

melting point  (mp) the minimum temperature at which a solid begins to liquefy.

near point  the nearest point of clear vision, the absolute near p. being that for either eye alone with accommodation relaxed, and the relative near p. that for both eyes with the employment of accommodation.

nodal points  two points on the axis of an optical system situated so that a ray falling on one will produce a parallel ray emerging through the other.

pressure point 

1. a point that is particularly sensitive to pressure.

2. one of various locations on the body at which digital pressure may be applied for the control of hemorrhage.

Various pressure points used to control hemorrhage.

subnasal point  the central point at the base of the nasal spine.

trigger point  a spot on the body at which pressure or other stimulus gives rise to specific sensations or symptoms.

triple point  the temperature and pressure at which the solid, liquid, and gas phases of a substance are in equilibrium.

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point (point)

n.

1. A sharp or tapered end.

2. A slight projection.

3. A stage or condition reached.

v.

To become ready to open, as an abscess or boil.

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point,

n 1. in acupuncture, a place where the channels run near the surface of the body. These points are stimulated by acupuncture theory and experience.
2. a location defined by a set of coordinates along a line.

point, boiling,

n the temperature at which liquid changes to a gas at atmospheric pressure; the temperature at which a liquid boils.

point, distal (disˑ·tl pointˑ),

n 1. a point on the body away from the center.
2. a referred or nearby area of pain, (as opposed to the primary, or most painful area) that acupressurists apply deep pressure to in order to release the tension.

point, extrameridian,

n in acupuncture, a point that does not fall on a channel.

point, flash,

n the lowest temperature at which the vapor of a liquid is flammable. Typical flash point values for essential oils are between 33 °C and 77° C.

point, injection (in·jekˑ·shn pointˑ),

n the site on a gas-liquid chromatograph in which small amount of sample material being analyzed is introduced. See also gas-liquid chromatography.

point, local,

n in acupressure, the area of acute pain.

point, melting,

n the temperature at which a substance under normal atmospheric pressure changes from a solid phase to a liquid phase.

point, motor,

n the muscle entry point for the motor nerve which innervates it.

point, nei guan (nā gwän point),

n acupuncture point located just above the inner wrist; useful in the treatment of nausea and vomiting. Also called
P6 and
‘inner gate.’

point, sedation,

n area of an acupuncture meridian that induces sedation when stimulated by the insertion of a fine needle.

point, singular,

n a place in which minute variation in one specification causes enormous change in another.

point, source,

n area of an acupuncture meridian that activates the entire meridian.

point, still,

n in craniosacral therapy, a short interruption in the rhythm created through fluctuation of the cerebrospinal fluid, achieved when tension of membranes or ligaments has been balanced. See also therapy, craniosacral.

point, tonification,

n area in an acupuncture meridian that stimulates the meridian when a filiform needle is inserted into it.

point, trigger,

n hypersensitive spot on the body that responds to stimulation by reflexively producing pain or an other manifestation.

point, wei,

n one of a family of acupuncture points that are stimulated when energy stimulation is needed.

points, ah shi (ä shē points),

n points other than the classical acupunc-ture points that could become sensitive during illness and that could be needled to bring relief. Also called
oh yes! points. See also points, trigger.

points, akabane (ä·kä·bäˑ·nā points),

n.pl key points used in traditional acupuncture that are located along the toes and fingers and are considered the terminal points of the body's meridians. Any marked sensitivity in these points indicates a presence of energy imbalance and dysfunction.

points, alarm,

n.pl diagnostic and treatment tools in acupressure. Painful areas on the chest and abdomen that signify that associated organs are out of balance. Also called
front collecting points or
mo points.

points, Bennett 's neurovascular,

n.pl See neurovascular (NV) reflex points.

points, clearance,

n.pl points generally positioned away from the center of the body that a practitioner can palpate to identify tension, tautness, vacancy, tenderness, or nonresilience and diagnose bodily dysfunctions.

points, command,

n.pl special acupoints that lie on the extremities, specifically between the fingers and elbows and the toes and knees that are known for their influence over the whole body and the flow of qi. See also acupoints, acupressure, acupuncture, and qi.

points, great,

n.pl acupoints on each meridian believed to be parti-cularly efficacious in manipulating energy. See also acupoints, acupressure, acupuncture, meridians, and qi.

points, hypersensitive acupuncture (hīˈ·per·senˑ·si·tiv aˈ·kyōō·punkˑ·chr),

n.pl acupuncture sites on the body that are so sensitive to pain that needle insertion is impossible.

points, Jones tender,

n.pl small, inconspicuous areas located throughout the body, which serve as sensory indications of a somatic disturbance or dysfunction. The system of evaluation that uses these regions as reference guides was discovered and developed by Lawrence Jones, DO. Dr. Jones also developed the strain/counterstrain or SCS approach as a method of correcting these dysfunctions. See also SCS.

points, latent,

n.pl acupuncture points on the body that are healthy and do not present any indications of point pathology.

points, mu (mōō points),

n.pl in medical acupuncture, reflex points located on the anterior side of the body, used for diagnostic and therapeutic purposes. Each is located on top of the organ for which it is named (e.g., the gallbladder or lung). All except two are found on the abdomen or chest. These two are located on the eleventh and twelfth rib and correspond with the kidney and spleen. Also called
alarm points.

points, myofascial trigger (mīˈ·ō·fāˑ·shē·l triˑ·ger pointsˑ),

n.pl areas of tenderness and spasm within tight bands of skeletal muscle.

points, neurovascular (NV) reflex (nerˈ·ō·vasˑ·ky·ler rēˑ·fleks pointsˑ),

n.pl numerous points situated all over the anterior side of the body that are used by a practitioner to indicate a specific diagnosis, impact functions of specific muscles, or relieve symptoms. The practitioner locates these points while performing neuromuscular techniques on the abdomen. If active, these regions will have an increased sensitivity to light pressure.

Points, neurovascular.

points, passive,

n.pl points that exhibit tenderness upon application of mechanical stimulation techniques like palpation.

points, sishencong (shē·sn·tsng points),

n.pl four acupuncture points, grouped on the most superior aspect of the scalp; useful for tranquilizing the mind and regulating the central nervous system to encourage sleep.

points, tender,

n.pl hypersen-sitive points in the muscles and fascia.

points, trigger,

n.pl tender areas localized to a specific region of the body that is able to transmit sensations of pain into a ‘target’ tissue. Pressure can also bring about painful sensations. These areas can be located in any soft tissues, particularly fascia and/or muscle, and are described as either ‘active’ or ‘latent.’ Palpation may be necessary to locate individual areas of tenderness.

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point,

n 1. a small spot or a small area.
n 2. a rotating instrument having a small cutting end or surface.

point A,

n the deepest point in the bony concavity in the midline at the base of the anterior nasal spine, in the region of the incisor roots. A landmark on the lateral cephalometric view.

point, abrasive, rotary,

n small abrasive instruments used in straight or contraangle handpieces. Also called
mounted carborundum, diamond.

point angle,

n See angle, point.

point B,

n a mandibular point comparable to point A.

point, bleeding,

n See bleeding points.

point, Bolton,

n the highest point of the curvature between the occipital condyle and the basilar part of the occipital bone and located behind the occipital condyle. A substitute for the basion point when it cannot be ascertained on cephalometric headplates.

point, central-bearing,

n the contact point of a central-bearing device. See also central-bearing device.

point, condenser,

n the nib of a condensing instrument, which is a short instrument for condensing foil or amalgam that is inserted into a mechanical condenser or into a cone socket handle.

point, contact,

n the area of contact of approximating surfaces of two adjacent teeth. The areas of contact are located at the line of junction between the occlusal and middle thirds of the posterior teeth and the incisal and middle thirds of the anterior teeth. Also called
contact area. See also open contact.

point, convenience,

n a small undercut in the cavity wall convenient for placing and retaining the first portion of a filling material. It is generally one of the retention points placed in a cavity preparation that provides the best access to the operator.

point D,

n the center of the body of the symphysis.

point, faulty contact,

n a defective contact between the proximal surfaces of adjacent teeth, produced by wearing of the contact areas, dental caries, improper restoration, or altered tooth position. See also open contact.

point, gutta-percha,

n See gutta-percha points.

point, hinge axis,

n a point placed on the skin corresponding with the opening axis of the mandible.

point, Hirschfeld's silver,

n.pr a calibrated silver rod used to record the clinical depth of periodontal pockets radiographically for the purpose of diagnosis.

point, incisor,

n the intersection of the mandibular occlusal and midsagittal planes. The point at the mesioincisal angles of the two mandibular central incisors.

point, loss of contact,

n the failure of contact of convex proximal surfaces of adjacent teeth; produced by tooth migration, dental caries, or improper restoration.

point, median mandibular,

n a point on the anteroposterior center of the mandibular ridge in the median sagittal plane.

point of centricity,

n if the point of the buccal cusp of the mandibular right molar, put in lateral position, arcs around the upright axis of the right condyle, it will reach a station where further muscular efforts leftward will change the cusp's direction so that it will arc around the left condyle. The station where the right arc ends and the left arc begins is a point of mandibular centricity. While the right cusp point orbits (arcs) around the near vertical axis, all other points in the jaw join in orbiting (arcing). The left condyle arcs rearward until it reaches a cranial backstop; then the muscles start rotating it and carrying it leftward, and the right condyle begins arcing forward, downward, and medially. In the right and left swings of the jaw, a condyle reciprocally alternates between being a rotator and an orbiter. The point of centricity of the mandible is demonstrated usually on a horizontal plane, but it can be demonstrated on all three planes of projection. The point of centricity is rearmost, midmost (between the arcs of motion), and uppermost. See also face-bow and relation, centric.

point, paper,

n See paper point.

point, registration,

n a point considered as fixed for a particular pattern of analysis. Also, the midpoint of a perpendicular line from the sella turcica to the Bolton-nasion plane.

point, transition,

n See Tg value.

point, treatment,

n a piece of paper point, selected for the root canal being treated, that carries or holds the medication in place.

point, trial,

n a cone of filling material placed in a canal and radiographed to check on the length and fit of the filling.

point, trigger,

n the point from which referred pain initiates. In the myofascial pain syndrome, usually a localized, deep tenderness in a taut bundle of muscle fibers from which pain is referred to other sites.

point, yield,

n 1. the place on the stress-strain curve where marked permanent deformation occurs. It is just beyond the proportional limit.
n 2. the point where permanent deformation starts in a metal.

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point

1. a small area or spot; the sharp end of an object.

2. to approach the surface, like the pus of an abscess, at a definite spot or place.

3. a single tine of an antler.

4. extremities of a sheep fleece which has been removed from the sheep and laid out on a classing table.

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auricular point

the center of the opening of the external acoustic meatus.

boiling point

the temperature at which a liquid will boil: at sea level, 212°F (100°C).

point of buttock

the prominence caused by the ischial tuberosity.

point of croup

highest point of the croup; caused by the sacral tuberosity.

dew point

the temperature at which moisture in the atmosphere is deposited as dew.

point of the elbow

the summit of the olecranon process.

point firing

see firing.

freezing point

the temperature at which a liquid begins to freeze; for water, 32°F (0°C).

point of the hip

the most lateral point of the hip; caused by the coxal tuberosity.

point of the hock

the summit of the calcaneus.

ice point

the temperature of equilibrium between ice and air-saturated water under one atmosphere pressure.

isobestic point

the wavelength at which two substances have the same absorptivity.

isoelectric point (pI)

the pH of a solution in which molecules of a specific substance, such as a protein, have equal numbers of positively and negatively charged groups and therefore do not migrate in an electric field.

lacrimal point

lacrimal puncta.

point of lay

the age of sexual maturity in female fowls.

point of maximal impulse (PMI)

the point on the chest where the impulse of the left ventricle is felt most strongly. It is usually on the left chest wall, around the area of the 5th costochondral junction.

melting point

the minimum temperature at which a solid begins to liquefy.

nodal p's

two points on the axis of an optical system situated so that a ray falling on one will produce a parallel ray emerging through the other.

point outbreak

see point epidemic.

paper point

very fine, tapered swabs used in endodontics to dry up the root canal.

point prescriptions

details of the exact needle procedures and locations of insertions for the treatment of specific diseases.

point prevalence rate

the proportion of the animals in a population at a point in time which are affected by the subject disease at that point. Called also instantaneous prevalence.

point selection

can be based on a table of prescriptions for specific diseases, or on the basis of which acupoints are tender, or on the basis of the innervation of the area of the lesion, and so on for a series of 11, and possibly more, strategies.

point of the shoulder

the point over the greater tubercle of the humerus.

point source epidemic

see point epidemic.

point of the sternum

the most cranial point of the sternum, caused by the manubrium.

trigger point

a spot on the body at which pressure or other stimulus gives rise to specific sensations or clinical signs.

triple point

the temperature and pressure at which the solid, liquid, and gas phases of a substance are in equilibrium.