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

Geophagist :: Geophagist (n.) One who eats earth, as dirt, clay, chalk, etc..
Chalk :: Chalk (v. t.) To make white, as with chalk; to make pale; to bleach..
Chalk :: Chalk (v. t.) To manure with chalk, as land..
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..
Line :: Line (n.) A more or less threadlike mark of pen, pencil, or graver; any long mark; as, a chalk line..
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..
Neocomian :: Neocomian (n.) A term applied to the lowest deposits of the Cretaceous or chalk formation of Europe, being the lower greensand..
Meagre :: Meagre (a.) Dry and harsh to the touch, as chalk..
Graphotype :: Graphotype (n.) A process for producing a design upon a surface in relief so that it can be printed from. Prepared chalk or oxide of zinc is pressed upon a smooth plate by a hydraulic press, and the design is drawn upon this in a peculiar ink which hardens the surface wherever it is applied. The surface is then carefully rubbed or brushed, leaving the lines in relief..
Chalked :: Chalked (imp. & p. p.) of Chal.
Blackboard :: Blackboard (n.) A broad board painted black, or any black surface on which writing, drawing, or the working of mathematical problems can be done with chalk or crayons. It is much used in schools..
Reddle :: Reddle (n.) Red chalk. See under Chalk.
Chalking :: Chalking (p. pr. & vb. n.) of Chal.
Insoluble :: Insoluble (a.) Not soluble; in capable or difficult of being dissolved, as by a liquid; as, chalk is insoluble in water..
Micraster :: Micraster (n.) A genus of sea urchins, similar to Spatangus, abounding in the chalk formation; -- from the starlike disposal of the ambulacral furrows..
Calciform :: Calciform (a.) In the form of chalk or lime.
Cretose :: Cretose (a.) Chalky; cretaceous.
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..
Calcography :: Calcography (n.) The art of drawing with chalk.
Cretaceously :: Cretaceously (adv.) In a chalky manner; as chalk.
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