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Radish
n.
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The pungent fleshy root of a well-known cruciferous plant (Raphanus sativus); also, the whole plant.
Radii
pl.
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of Radius
Radiuses
pl.
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of Radius
Radius
n.
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A right line drawn or extending from the center of a circle to the periphery; the semidiameter of a circle or sphere.
Radius
n.
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The preaxial bone of the forearm, or brachium, corresponding to the tibia of the hind limb. See Illust. of Artiodactyla.
Radius
n.
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A ray, or outer floret, of the capitulum of such plants as the sunflower and the daisy. See Ray, 2.
Radius
n.
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The barbs of a perfect feather.
Radius
n.
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Radiating organs, or color-markings, of the radiates.
Radius
n.
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The movable limb of a sextant or other angular instrument.
Radius vector
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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 coordinates. See Coordinate, n.
Radius vector
n.
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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.
Radices
pl.
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of Radix
Radixes
pl.
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of Radix
Radix
n.
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A primitive word, from which spring other words; a radical; a root; an etymon.
Radix
n.
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A number or quantity which is arbitrarily made the fundamental number of any system; a base. Thus, 10 is the radix, or base, of the common system of logarithms, and also of the decimal system of numeration.
Radix
n.
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A finite expression, from which a series is derived.
Radix
n.
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The root of a plant.
Radulae
pl.
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of Radula
Radula
n.
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The chitinous ribbon bearing the teeth of mollusks; -- called also lingual ribbon, and tongue. See Odontophore.
Raduliform
a.
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Rasplike; as, raduliform teeth.
Raffed
imp. & p. p.
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of Raff
Raffing
p. pr. & vb. n.
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of Raff
Raff
v. t.
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To sweep, snatch, draw, or huddle together; to take by a promiscuous sweep.
Raff
n.
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A promiscuous heap; a jumble; a large quantity; lumber; refuse.
Raff
n.
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The sweepings of society; the rabble; the mob; -- chiefly used in the compound or duplicate, riffraff.
Raff
n.
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A low fellow; a churl.
Raffaelesque
a.
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Raphaelesque.
Raffia
n.
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A fibrous material used for tying plants, said to come from the leaves of a palm tree of the genus Raphia.
Raffinose
n.
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A colorless crystalline slightly sweet substance obtained from the molasses of the sugar beet.
Raffish
a.
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Resembling, or having the character of, raff, or a raff; worthless; low.