Found 1 items, similar to Ventral segment.
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Definition: Ventral segment
, n. [L. segmentum, fr. secare to cut, cut
off: cf. F. segment. See Saw
a cutting instrument.]
1. One of the parts into which any body naturally separates
or is divided; a part divided or cut off; a section; a
portion; as, a segment of an orange; a segment of a
compound or divided leaf.
2. (Geom.) A part cut off from a figure by a line or plane;
especially, that part of a circle contained between a
chord and an arc of that circle, or so much of the circle
as is cut off by the chord; as, the segment acb in the
(a) A piece in the form of the sector of a circle, or part
of a ring; as, the segment of a sectional fly wheel or
(b) A segment gear.
(a) One of the cells or division formed by segmentation,
as in egg cleavage or in fissiparous cell formation.
(b) One of the divisions, rings, or joints into which many
animal bodies are divided; a somite; a metamere; a
, a piece for receiving or communicating
reciprocating motion from or to a cogwheel, consisting of
a sector of a circular gear, or ring, having cogs on the
periphery, or face.
Segment of a line
, the part of a line contained between two
points on it.
Segment of a sphere
, the part of a sphere cut off by a
plane, or included between two parallel planes.
. (Acoustics) See Loor
, n., 5.
, a. [L. ventralis, fr. venter the belly;
perhaps akin to G. wanst: cf. F. ventral.]
1. (Anat.) Of, pertaining to, or situated near, the belly, or
ventral side, of an animal or of one of its parts; hemal;
abdominal; as, the ventral fin of a fish; the ventral root
of a spinal nerve; -- opposed to dorsal
(a) Of or pertaining to that surface of a carpel, petal,
etc., which faces toward the center of a flower.
(b) Of or pertaining to the lower side or surface of a
creeping moss or other low flowerless plant. Opposed
(Zo["o]l.), the posterior pair of fins of a
fish. They are often situated beneath the belly, but
sometimes beneath the throat.
. (Acoustics) See Loop
, n., 5.