Definition of disk

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

Lern More About Disk

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.
Shield :: Shield (n.) In lichens, a Hardened cup or disk surrounded by a rim and containing the fructification, or asci..
Myzostomata :: Myzostomata (n. pl.) An order of curious parasitic worms found on crinoids. The body is short and disklike, with four pairs of suckers and five pairs of hook-bearing parapodia on the under side..
Gastrodisc :: Gastrodisc (n.) That part of blastoderm where the hypoblast appears like a small disk on the inner face of the epibladst.
Discus :: Discus (n.) A disk. See Disk.
Medusoid :: Medusoid (a.) Like a medusa; having the fundamental structure of a medusa, but without a locomotive disk; -- said of the sessile gonophores of hydroids..
Drummond Light :: Drummond light () A very intense light, produced by turning two streams of gas, one oxygen and the other hydrogen, or coal gas, in a state of ignition, upon a ball of lime; or a stream of oxygen gas through a flame of alcohol upon a ball or disk of lime; -- called also oxycalcium light, or lime light..
Subundation :: Subumbrella (n.) The integument of the under surface of the bell, or disk-shaped body, of a jellyfish..
Wafer :: Wafer (n.) An adhesive disk of dried paste, made of flour, gelatin, isinglass, or the like, and coloring matter, -- used in sealing letters and other documents..
Egress :: Egress (n.) The passing off from the sun's disk of an inferior planet, in a transit..
Target :: Target (n.) A conspicuous disk attached to a switch lever to show its position, or for use as a signal..
Sarcous :: Sarcous (a.) Fleshy; -- applied to the minute structural elements, called sarcous elements, or sarcous disks, of which striated muscular fiber is composed..
Discoid :: Discoid (a.) Having the form of a disk, as those univalve shells which have the whorls in one plane, so as to form a disk, as the pearly nautilus..
Rondle :: Rondle (n.) A round mass, plate, or disk; especially (Metal.), the crust or scale which forms upon the surface of molten metal in the crucible..
Discodactylia :: Discodactylia (n. pl.) A division of amphibians having suctorial disks on the toes, as the tree frogs..
Diskless :: Diskless (a.) Having no disk; appearing as a point and not expanded into a disk, as the image of a faint star in a telescope..
Gecko :: Gecko (n.) Any lizard of the family Geckonidae. The geckoes are small, carnivorous, mostly nocturnal animals with large eyes and vertical, elliptical pupils. Their toes are generally expanded, and furnished with adhesive disks, by which they can run over walls and ceilings. They are numerous in warm countries, and a few species are found in Europe and the United States. See Wall gecko, Fanfoot..
Sung :: Sunflower (n.) Any plant of the genus Helianthus; -- so called probably from the form and color of its flower, which is large disk with yellow rays. The commonly cultivated sunflower is Helianthus annuus, a native of America..
Phase :: Phase (n.) A particular appearance or state in a regularly recurring cycle of changes with respect to quantity of illumination or form of enlightened disk; as, the phases of the moon or planets. See Illust. under Moon..
Umbrella :: Umbrella (n.) The umbrellalike disk, or swimming bell, of a jellyfish..
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