orifice


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Related to orifice: Orifice plate, Back Orifice

orifice

 [or´ĭ-fis]
1. the entrance or outlet of any body cavity.
2. any opening or meatus. adj., adj orific´ial.
aortic orifice the opening of the left ventricle into the aorta; called also aortic opening.
external urethral orifice urinary meatus.
internal urethral orifice the opening from the urinary bladder into the urethra at one corner of the trigone of the bladder.
left atrioventricular orifice (mitral orifice) the opening between the left atrium and ventricle of the heart.
pulmonary orifice (orifice of pulmonary trunk) the opening between the pulmonary trunk and the right ventricle of the heart; called also opening of pulmonary trunk.
right atrioventricular orifice (tricuspid orifice) the opening between the right atrium and ventricle of the heart.
ureteral orifice the opening of a ureter into the urinary bladder at one corner of the trigone of the bladder. Called also ureteral meatus.

or·i·fice

(or'i-fis), [TA] Avoid the mispronunciation or'ĭ-fĭ-sēz of the plural of this word.
Any aperture or opening.
See also: aperture, opening, os, ostium, meatus.
Synonym(s): orificium [TA]
[L. orificium]

orifice

/or·i·fice/ (or´ĭ-fis)
1. the entrance or outlet of any body cavity.
2. any opening or meatus.orific´ial

aortic orifice  the opening of the left ventricle into the aorta.
cardiac orifice  see under opening.
external urethral orifice  urinary meatus.
left atrioventricular orifice , mitral orifice the opening between the left atrium and ventricle of the heart.
pulmonary orifice , orifice of pulmonary trunk the opening between the pulmonary trunk and the right ventricle.
right atrioventricular orifice , tricuspid orifice the opening between the right atrium and ventricle of the heart.

orifice

(ôr′ə-fĭs, ŏr′-)
n.
An opening, especially to a cavity or passage of the body; a mouth or vent.

or′i·fi′cial (-fĭsh′əl) adj.

orifice

[ôr′ifis]
Etymology: L, orificium, opening
the entrance or outlet of any body cavity. Also called ostium. orificial, adj.

or·i·fice

(ōr'i-fis) [TA]
Any aperture or opening.
Synonym(s): orificium.
[L. orificium]

orifice

any opening or aperture.

or·i·fice

(ōr'i-fis) [TA]
Any aperture or opening.
[L. orificium]

orifice (ôr´ifis),

n an older term for the opening, entrance, or outlet of any body cavity; any foramen or meatus.

orifice

1. the entrance or outlet of any body cavity.
2. any foramen, meatus or opening.
The names of most orifices are self-defining, e.g. atrioventricular, preputial. See also ostium.

atrioventricular orifice
the opening between the atria and ventricles.
cecocolic orifice
aperture through which the cecum connects with the colon.
ileocolic orifice
the communicating orifice between the ileum and the colon.
infundibular orifice
slit-like orifice at the ovarian end of the avian oviduct; positioned near the ovary so that it can grasp the newly extruded oocyte.
intrapharyngeal orifice
the orifice between the nasopharynx and oropharynx which is bounded by the palatopharyngeal arches.
nasomaxillary orifice
the slit-like opening between the maxillary sinus and the middle meatus of the nasal cavity.
omasoabomasal orifice
large, oval opening at the end of the omasal canal which communicates with the abomasum.
oviductal orifice
a slit-like opening in the avian urodeum.
pyloric orifice
aperture between the stomach and duodenum; opens infrequently, solely for the passage of ingesta.
ureteric orifice
paired orifices in the neck of the bladder.
References in periodicals archive ?
Despite these contributions, the details of the flow and flame passage through the orifice, which seems crucial for determining overall ignition and the ignition mechanism, have not been examined extensively yet.
there is considerably less chance of leaking molten plastic or carriage blow-back, because the nozzle-tip contact area will be closer to the bushing's orifice.
The patients had 148 affected parts: 47 at the urethral orifice, 23 at the penis body, 20 at the foreskin, 20 at the glans penis, 16 at the coronal sulcus, 12 at the frenulum, 8 at the labia majora and 2 at the vaginal orifice.
This report provides orifice plate and meter tube/fitting specifications, tolerance and installation requirements that are needed to meet AGA-3/API 14.
There is no pressure in the waterjet stream once it exits the cutting head; pressure in the water has been converted to velocity as the water exits the waterjet orifice.
But the entirety of the right ectopic ureter, as well as the possible ectopic orifice area, could not be seen, which probably indicates a dysplastic and poorly functioning segment.
In this study, the horizontal component of the Reynolds shear stress was studied as a major factor in the hydraulic design of fish type orifice and weir.
2 Tra- ditionally most endodontic canal identification methods have relied on the doctor's tactile sensation and mental image of the canal system the ability to visualize the canal orifices with naked eye could be severely limited specially when it is additional/ extra orifice because of its relatively small size.
The Weigert-Meyer rule describes the inverse relationship of the duplex ureteral orifices, in which the ectopic ureter or ureterocele associated with the upper pole is caudal to the lower pole ureteral orifice.
eom brand philosophy hinges on identifying emerging neighborhoods, and this new orifice is our follow-through on this vision.
The diameter of LAA orifice; the distances between the orifices of left superior pulmonary veins, left anterior descending (LAD) artery, circumflex artery, mitral valve, oval fossa and LAA orifices were measured.
The first configuration was a two orifice die (Fig.