Definition of disk

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Disk (n.) A circular structure either in plants or animals; as, a blood disk; germinal disk, etc..

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Palm :: Palm (n.) A metallic disk, attached to a strap, and worn the palm of the hand, -- used to push the needle through the canvas, in sewing sails, etc..
Target :: Target (n.) A conspicuous disk attached to a switch lever to show its position, or for use as a signal..
Glory :: Glory (n.) An emanation of light supposed to proceed from beings of peculiar sanctity. It is represented in art by rays of gold, or the like, proceeding from the head or body, or by a disk, or a mere line..
Discal :: Discal (a.) Pertaining to, or resembling, a disk; as, discal cells..
Interpubic :: Interpubic (a.) Between the pubic bones or cartilages; as, the interpubic disk..
Encrinoidea :: Encrinoidea (n. pl.) That order of the Crinoidea which includes most of the living and many fossil forms, having jointed arms around the margin of the oral disk; -- also called Brachiata and Articulata. See Illusts. under Comatula and Crinoidea..
Lindia :: Lindia (n.) A peculiar genus of rotifers, remarkable for the absence of ciliated disks. By some zoologists it is thought to be like the ancestral form of the Arthropoda..
Starfish :: Starfish (n.) Any one of numerous species of echinoderms belonging to the class Asterioidea, in which the body is star-shaped and usually has five rays, though the number of rays varies from five to forty or more. The rays are often long, but are sometimes so short as to appear only as angles to the disklike body. Called also sea star, five-finger, and stellerid..
Limb :: Limb (n.) The border or edge of the disk of a heavenly body, especially of the sun and moon..
Placentiform :: Placentiform (a.) Having the shape of a placenta, or circular thickened disk somewhat thinner about the middle..
Cadrans :: Cadrans (n.) An instrument with a graduated disk by means of which the angles of gems are measured in the process of cutting and polishing.
Tethys :: Tethys (n.) A genus of a large naked mollusks having a very large, broad, fringed cephalic disk, and branched dorsal gills. Some of the species become a foot long and are brilliantly colored..
Lophophore :: Lophophore (n.) A disk which surrounds the mouth and bears the tentacles of the Bryozoa. See Phylactolemata.
Anorthoscope :: Anorthoscope (n.) An optical toy for producing amusing figures or pictures by means of two revolving disks, on one of which distorted figures are painted..
Subundation :: Subumbrella (n.) The integument of the under surface of the bell, or disk-shaped body, of a jellyfish..
Ophiuroidea :: Ophiuroidea (n. pl.) A class of star-shaped echinoderms having a disklike body, with slender, articulated arms, which are not grooved beneath and are often very fragile; -- called also Ophiuroida and Ophiuridea. See Illust. under Brittle star..
Sabot :: Sabot (n.) A thick, circular disk of wood, to which the cartridge bag and projectile are attached, in fixed ammunition for cannon; also, a piece of soft metal attached to a projectile to take the groove of the rifling..
Starost :: Starnose (n.) A curious American mole (Condylura cristata) having the nose expanded at the end into a stellate disk; -- called also star-nosed mole.
Photodrome :: Photodrome (n.) An apparatus consisting of a large wheel with spokes, which when turning very rapidly is illuminated by momentary flashes of light passing through slits in a rotating disk. By properly timing the succession of flashes the wheel is made to appear to be motionless, or to rotate more or less slowly in either direction..
Pallet :: Pallet (n.) One of the series of disks or pistons in the chain pump.
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