Definition of Ventral segment. Meaning of Ventral segment. Synonyms of Ventral segment
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Definition of Ventral segment
ventral segment Loop Loop, n. [Cf. Ir. & Gael. lub loop, noose, fold, thong,
bend, lub to bend, incline.]
1. A fold or doubling of a thread, cord, rope, etc., through
which another thread, cord, etc., can be passed, or which
a hook can be hooked into; an eye, as of metal; a staple;
a noose; a bight.
That the probation bear no hinge, nor loop To hang a
doubt on. --Shak.
2. A small, narrow opening; a loophole.
And stop all sight-holes, every loop from whence The
eye of Reason may pry in upon us. --Shak.
3. A curve of any kind in the form of a loop.
4. (Telegraphy) A wire forming part of a main circuit and
returning to the point from which it starts.
5. (Acoustics) The portion of a vibrating string, air column,
etc., between two nodes; -- called also ventral segment.
Loop knot, a single knot tied in a doubled cord, etc. so as
to leave a loop beyond the knot. See Illust. of Knot.
Ventral segment Ventral Ven"tral, 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.
2. (Bot.)
(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
to dorsal.
Ventral fins (Zo["o]l.), the posterior pair of fins of a
fish. They are often situated beneath the belly, but
sometimes beneath the throat.
Ventral segment. (Acoustics) See Loop, n., 5.
Ventral segment Segment Seg"ment, 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
Illustration.
3. (Mach.)
(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
flywheel rim.
(b) A segment gear.
4. (Biol.)
(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
somatome.
Segment gear, 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.
Ventral segment. (Acoustics) See Loor, n., 5.
