horizontal plane


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Related to horizontal plane: median plane

plane

 [plān]
1. a flat surface determined by the position of three points in space.
2. an imaginary flat surface that divides the body into sections (see accompanying figure). adj., adj pla´nar.
3. a specified level, as the plane of anesthesia.
4. to rub away or abrade; see also planing and plastic surgery.
5. a superficial incision in the wall of a cavity or between tissue layers, especially in plastic surgery, made so that the precise point of entry into the cavity or between the layers can be determined.
Planes of section. Transverse, sagittal, and frontal planes of the body. From Applegate, 2000.
coronal p's frontal p's.
datum plane a given horizontal plane from which craniometric measurements are made.
frontal p's those planes passing longitudinally through the body, an organ, or a part, at right angles to the median plane and dividing into front and back portions. Called also coronal planes.
horizontal plane transverse plane.
median plane one passing longitudinally through the body, an organ, or a part from front to back, dividing it into right and left halves.
sagittal p's vertical planes through the body parallel to the median plane or the sagittal suture, dividing the body into unequal left and right portions.
transverse plane one passing horizontally through the body, an organ, or a part at right angles to the median and frontal planes, dividing it into upper and lower portions. Called also horizontal plane.
vertical plane one perpendicular to a horizontal plane, such as a sagittal plane, median plane, or frontal plane.

horizontal plane

Etymology: Gk, horizein, to encircle; L, planum, level ground
1 any plane of the erect body parallel to the horizon, dividing the body into upper and lower parts.
2 a plane passing through a tooth at right angles to its long axis.

horizontal plane

Transverse plane Imaging A directional plane that divides the body, organ, or appendage into superior and inferior or proximal and distal

cardinal planes of the body

frontal (coronal), sagittal (median) and horizontal (transverse) planes of the body, each of which is oriented on the three planes of space
  • coronal/frontal plane plane equally dividing anterior and posterior aspects; it lies at right angles to sagittal and horizontal planes

  • horizontal/transverse plane plane parallel to the ground or horizontal surface; equally dividing superior and inferior areas; it lies at right angles to both sagittal and frontal planes

  • sagittal/median plane plane equally dividing left and right sides; it lies at right angles to both transverse and frontal planes

hor·i·zon·tal plane

(hōr'i-zon'tăl plān)
Surface parallel and relative to the horizon; in the anatomic position, horizontal planes are transverse planes; in the supine or prone positions, horizontal planes are frontal.

plane

1. a flat surface determined by the position of three points in space.
2. a specified level, as the plane of anesthesia.
3. to rub away or abrade. See also planing and plastic surgery.
4. a superficial incision in the wall of a cavity or between tissue layers, especially in plastic surgery, made so that the precise point of entry into the cavity or between the layers can be determined.

coronal plane
frontal plane, an ambiguous term when applied to quadrupeds and bipeds.
dorsal plane
any plane passing longitudinally through the body from side to side, at right angles to the median plane and dividing the body into dorsal and ventral parts. Called also coronal plane, frontal plane.
horizontal plane
one passing through the body at right angles to the median plane, and dividing the body into upper and lower parts.
inclined plane
an intraoral acrylic or metal appliance used in orthodontics to guide a tooth into a new position by using pressure applied when the mouth is closed normally. Commonest use is to move canines laterally.
median plane
one passing longitudinally through the body from front to back and dividing it into right and left halves.
nasal plane
the space between the nostrils.
nasolabial plane
the extension of the nasal plane between the nostrils into the upper lip in cattle.
nuchal plane
the flat surface at the back of the occipital bone below the nuchal crest.
rostral plane
the bare area on the dorsum of the snout of the pig.
sagittal plane
a vertical plane through the body parallel to the median plane (or to the sagittal suture) and dividing the body into left and right portions.
transverse plane
one passing through the body, at right angles to the sagittal and dorsal planes, and dividing the body into cranial and caudal portions.
vertical plane
one perpendicular to a horizontal plane, dividing the body into left and right, or front and back portions.
References in periodicals archive ?
The difference between a horizontal plane and a level surface is the primary difference between the two types of surveying, plane surveying and geodetic surveying.
The spatial locations of the sound sources were randomly selected with the constraint that an equal number appeared in each quadrant of the horizontal plane (i.
The horizontal plane was chosen here because, within this, the haptic oblique effect is present when the gravitational cues are natural, and it is absent when these cues are reduced (Gentaz & Hatwell, 1996).
For the patch antenna without the conical structure, the horizontal plane (X-Y plane) has an almost constant gain of -7.
7) for five cases of loading in the horizontal plane and one case of loading in the vertical plane led to the conclusions:
Like the horizontal sundial, the analemmatic sundial is derived from an equatorial sundial by projecting the equatorial ring onto a horizontal plane, but it is an orthogonal projection onto the horizontal plane rather than in the direction of the Earth's axis.
Swinging table of the MCCB mould moves symmetrically relative horizontal plane (axis OX) upwards and downwards.
Three identical spherical cavities were spaced in the horizontal plane by 120 degrees from each other and connected to the catching basin by rectangular runners.
Light catches the creamy floor of Spanish limestone, turning it to a gleaming horizontal plane that brightens the cavernous spaces.
Then, with the spin half-[pi] turned to lie on the horizontal plane (corresponding to the superposition of parallel and antiparallel components to the direction of the guide field), the neutrons pass through Slit 3 and enter the first resonator sample standing on a remote controlled high precision goniometer.