Definition of chalk

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Chalk (n.) A soft, earthy substance, of a white, grayish, or yellowish white color, consisting of calcium carbonate, and having the same composition as common limestone..

Lern More About Chalk

Supradecompound :: Supracretaceous (a.) Lying above the chalk; Supercretaceous.
Calciform :: Calciform (a.) In the form of chalk or lime.
Chalking :: Chalking (p. pr. & vb. n.) of Chal.
Shovelboard :: Shovelboard (n.) A game played on board ship in which the aim is to shove or drive with a cue wooden disks into divisions chalked on the deck; -- called also shuffleboard.
Micraster :: Micraster (n.) A genus of sea urchins, similar to Spatangus, abounding in the chalk formation; -- from the starlike disposal of the ambulacral furrows..
Sarsen :: Sarsen (n.) One of the large sandstone blocks scattered over the English chalk downs; -- called also sarsen stone, and Druid stone..
Chalky :: Chalky (a.) Consisting of, or resembling, chalk; containing chalk; as, a chalky cliff; a chalky taste..
Rotalite :: Rotalite (n.) Any fossil foraminifer of the genus Rotalia, abundant in the chalk formation. See Illust. under Rhizopod..
Meagre :: Meagre (a.) Dry and harsh to the touch, as chalk..
Chalk :: Chalk (v. t.) To make white, as with chalk; to make pale; to bleach..
Chalked :: Chalked (imp. & p. p.) of Chal.
Whiting :: Whiting (n.) Chalk prepared in an impalpable powder by pulverizing and repeated washing, used as a pigment, as an ingredient in putty, for cleaning silver, etc..
Bufonite :: Bufonite (n.) An old name for a fossil consisting of the petrified teeth and palatal bones of fishes belonging to the family of Pycnodonts (thick teeth), whose remains occur in the oolite and chalk formations; toadstone; -- so named from a notion that it was originally formed in the head of a toad..
Chalk :: Chalk (n.) Finely prepared chalk, used as a drawing implement; also, by extension, a compound, as of clay and black lead, or the like, used in the same manner. See Crayon..
Chalkstone :: Chalkstone (n.) A chalklike concretion, consisting mainly of urate of sodium, found in and about the small joints, in the external ear, and in other situations, in those affected with gout; a tophus..
Portland Cement :: Portland cement () A cement having the color of the Portland stone of England, made by calcining an artificial mixture of carbonate of lime and clay, or sometimes certain natural limestones or chalky clays. It contains a large proportion of clay, and hardens under water..
Glauconite :: Glauconite (n.) The green mineral characteristic of the greensand of the chalk and other formations. It is a hydrous silicate of iron and potash. See Greensand.
Absorbent :: Absorbent (n.) Any substance which absorbs and neutralizes acid fluid in the stomach and bowels, as magnesia, chalk, etc.; also a substance e. g., iodine) which acts on the absorbent vessels so as to reduce enlarged and indurated parts..
Post :: Post (n.) The doorpost of a victualer's shop or inn, on which were chalked the scores of customers; hence, a score; a debt..
Chalkstone :: Chalkstone (n.) A mass of chalk.
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