Definition of Adius. Meaning of Adius. Synonyms of Adius
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Definition of Adius
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Gladius Gladius Gla"di*us, n.; pl. Gladii. [L., a sword.] (Zo["o]l.)
The internal shell, or pen, of cephalopods like the squids.
Hyporadius Hyporadius Hy`po*ra"di*us, n.; pl. Hyporadii. [Pref. hypo- +
radius.] (Zo["o]l.)
One of the barbs of the hypoptilum, or aftershaft of a
feather. See Feather.
Radius Radius Ra"di*us, n.; pl. L. Radii; E. Radiuses. [L., a
staff, rod, spoke of a wheel, radius, ray. See Ray a
divergent line.]
1. (Geom.) A right line drawn or extending from the center of
a circle to the periphery; the semidiameter of a circle or
sphere.
2. (Anat.) The preaxial bone of the forearm, or brachium,
corresponding to the tibia of the hind limb. See Illust.
of Artiodactyla.
Note: The radius is on the same side of the limb as the
thumb, or pollex, and in man it so articulated that its
lower end is capable of partial rotation about the
ulna.
3. (Bot.) A ray, or outer floret, of the capitulum of such
plants as the sunflower and the daisy. See Ray, 2.
4. pl. (Zo["o]l.)
(a) The barbs of a perfect feather.
(b) Radiating organs, or color-markings, of the radiates.
5. The movable limb of a sextant or other angular instrument.
--Knight.
Radius bar (Math.), a bar pivoted at one end, about which
it swings, and having its other end attached to a piece
which it causes to move in a circular arc.
Radius of curvature. See under Curvature.
Radius bar Radius Ra"di*us, n.; pl. L. Radii; E. Radiuses. [L., a
staff, rod, spoke of a wheel, radius, ray. See Ray a
divergent line.]
1. (Geom.) A right line drawn or extending from the center of
a circle to the periphery; the semidiameter of a circle or
sphere.
2. (Anat.) The preaxial bone of the forearm, or brachium,
corresponding to the tibia of the hind limb. See Illust.
of Artiodactyla.
Note: The radius is on the same side of the limb as the
thumb, or pollex, and in man it so articulated that its
lower end is capable of partial rotation about the
ulna.
3. (Bot.) A ray, or outer floret, of the capitulum of such
plants as the sunflower and the daisy. See Ray, 2.
4. pl. (Zo["o]l.)
(a) The barbs of a perfect feather.
(b) Radiating organs, or color-markings, of the radiates.
5. The movable limb of a sextant or other angular instrument.
--Knight.
Radius bar (Math.), a bar pivoted at one end, about which
it swings, and having its other end attached to a piece
which it causes to move in a circular arc.
Radius of curvature. See under Curvature.
Radius of curvature Radius Ra"di*us, n.; pl. L. Radii; E. Radiuses. [L., a
staff, rod, spoke of a wheel, radius, ray. See Ray a
divergent line.]
1. (Geom.) A right line drawn or extending from the center of
a circle to the periphery; the semidiameter of a circle or
sphere.
2. (Anat.) The preaxial bone of the forearm, or brachium,
corresponding to the tibia of the hind limb. See Illust.
of Artiodactyla.
Note: The radius is on the same side of the limb as the
thumb, or pollex, and in man it so articulated that its
lower end is capable of partial rotation about the
ulna.
3. (Bot.) A ray, or outer floret, of the capitulum of such
plants as the sunflower and the daisy. See Ray, 2.
4. pl. (Zo["o]l.)
(a) The barbs of a perfect feather.
(b) Radiating organs, or color-markings, of the radiates.
5. The movable limb of a sextant or other angular instrument.
--Knight.
Radius bar (Math.), a bar pivoted at one end, about which
it swings, and having its other end attached to a piece
which it causes to move in a circular arc.
Radius of curvature. See under Curvature.
Radius of curvature Curvature Cur"va*ture (k?r"v?-t?r; 135), n. [L. curvatura. See
Curvate.]
1. The act of curving, or the state of being bent or curved;
a curving or bending, normal or abnormal, as of a line or
surface from a rectilinear direction; a bend; a curve.
--Cowper.
The elegant curvature of their fronds. --Darwin.
2. (Math.) The amount of degree of bending of a mathematical
curve, or the tendency at any point to depart from a
tangent drawn to the curve at that point.
Aberrancy of curvature (Geom.), the deviation of a curve
from a circular form.
Absolute curvature. See under Absolute.
Angle of curvature (Geom.), one that expresses the amount
of curvature of a curve.
Chord of curvature. See under Chord.
Circle of curvature. See Osculating circle of a curve,
under Circle.
Curvature of the spine (Med.), an abnormal curving of the
spine, especially in a lateral direction.
Radius of curvature, the radius of the circle of curvature,
or osculatory circle, at any point of a curve.
Radius of gyration Gyration Gy*ra"tion, n.
1. The act of turning or whirling, as around a fixed center;
a circular or spiral motion; motion about an axis;
rotation; revolution.
The gyrations of an ascending balloon. --De Quincey.
If a burning coal be nimbly moved round in a circle,
with gyrations continually repeated, the whole
circle will appear like fire. --Sir I.
Newton.
2. (Zo["o]l.) One of the whorls of a spiral univalve shell.
Center of gyration. (Mech.) See under Center.
Radius of gyration the distance between the axis of a
rotating body and its center of gyration. --Rankine.
Radius vector Radius vector Ra"di*us vec"tor
1. (Math.) A straight line (or the length of such line)
connecting any point, as of a curve, with a fixed point,
or pole, round which the straight line turns, and to which
it serves to refer the successive points of a curve, in a
system of polar co["o]rdinates. See Co["o]rdinate, n.
2. (Astron.) An ideal straight line joining the center of an
attracting body with that of a body describing an orbit
around it, as a line joining the sun and a planet or
comet, or a planet and its satellite.
Radiuses Radius Ra"di*us, n.; pl. L. Radii; E. Radiuses. [L., a
staff, rod, spoke of a wheel, radius, ray. See Ray a
divergent line.]
1. (Geom.) A right line drawn or extending from the center of
a circle to the periphery; the semidiameter of a circle or
sphere.
2. (Anat.) The preaxial bone of the forearm, or brachium,
corresponding to the tibia of the hind limb. See Illust.
of Artiodactyla.
Note: The radius is on the same side of the limb as the
thumb, or pollex, and in man it so articulated that its
lower end is capable of partial rotation about the
ulna.
3. (Bot.) A ray, or outer floret, of the capitulum of such
plants as the sunflower and the daisy. See Ray, 2.
4. pl. (Zo["o]l.)
(a) The barbs of a perfect feather.
(b) Radiating organs, or color-markings, of the radiates.
5. The movable limb of a sextant or other angular instrument.
--Knight.
Radius bar (Math.), a bar pivoted at one end, about which
it swings, and having its other end attached to a piece
which it causes to move in a circular arc.
Radius of curvature. See under Curvature.
Xiphias gladius Swordfish Sword"fish`, n.
1. (Zo["o]l.)
(a) A very large oceanic fish (Xiphias gladius), the
only representative of the family Xiphiid[ae]. It is
highly valued as a food fish. The bones of the upper
jaw are consolidated, and form a long, rigid,
swordlike beak; the dorsal fin is high and without
distinct spines; the ventral fins are absent. The
adult is destitute of teeth. It becomes sixteen feet
or more long.
(b) The gar pike.
(c) The cutlass fish.
2. (Astron.) A southern constellation. See Dorado, 1.
Swordfish sucker (Zo["o]l.), a remora (Remora
brachyptera) which attaches itself to the swordfish.
