- prepared chalk
- prepared chalk n finely ground native calcium carbonate that is freed of most of its impurities by elutriation and used esp. in dentistry for polishing
Medical dictionary. 2011.
prepared chalk
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prepared chalk — noun : native calcium carbonate ground to a fine powder and freed of most of its impurities by elutriation called also drop chalk … Useful english dictionary
Chalk — (ch[add]k), n. [AS. cealc lime, from L. calx limestone. See {Calz}, and {Cawk}.] 1. (Min.) A soft, earthy substance, of a white, grayish, or yellowish white color, consisting of calcium carbonate, and having the same composition as common… … The Collaborative International Dictionary of English
Chalk drawing — Chalk Chalk (ch[add]k), n. [AS. cealc lime, from L. calx limestone. See {Calz}, and {Cawk}.] 1. (Min.) A soft, earthy substance, of a white, grayish, or yellowish white color, consisting of calcium carbonate, and having the same composition as… … The Collaborative International Dictionary of English
Chalk formation — Chalk Chalk (ch[add]k), n. [AS. cealc lime, from L. calx limestone. See {Calz}, and {Cawk}.] 1. (Min.) A soft, earthy substance, of a white, grayish, or yellowish white color, consisting of calcium carbonate, and having the same composition as… … The Collaborative International Dictionary of English
Chalk line — Chalk Chalk (ch[add]k), n. [AS. cealc lime, from L. calx limestone. See {Calz}, and {Cawk}.] 1. (Min.) A soft, earthy substance, of a white, grayish, or yellowish white color, consisting of calcium carbonate, and having the same composition as… … The Collaborative International Dictionary of English
Chalk mixture — Chalk Chalk (ch[add]k), n. [AS. cealc lime, from L. calx limestone. See {Calz}, and {Cawk}.] 1. (Min.) A soft, earthy substance, of a white, grayish, or yellowish white color, consisting of calcium carbonate, and having the same composition as… … The Collaborative International Dictionary of English
Chalk period — Chalk Chalk (ch[add]k), n. [AS. cealc lime, from L. calx limestone. See {Calz}, and {Cawk}.] 1. (Min.) A soft, earthy substance, of a white, grayish, or yellowish white color, consisting of calcium carbonate, and having the same composition as… … The Collaborative International Dictionary of English
Chalk pit — Chalk Chalk (ch[add]k), n. [AS. cealc lime, from L. calx limestone. See {Calz}, and {Cawk}.] 1. (Min.) A soft, earthy substance, of a white, grayish, or yellowish white color, consisting of calcium carbonate, and having the same composition as… … The Collaborative International Dictionary of English
chalk — SYN: calcium carbonate. [L. calx] French c. SYN: talc. prepared c. purified native calcium carbonate, usually molded into cones; used as a mild astringent and antacid. * * * chalk chȯk n a soft white, gray, or buff limestone compose … Medical dictionary
Chalk — For other uses, see Chalk (disambiguation). Chalk Sedimentary Rock The Needles, situated on the Isle of Wight, are part of the extensive Southern England Chalk Formation. Composition … Wikipedia
