Adjacent Words

cementum definitions

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WordNet (r) 3.0 (2005)

n
1: a specialized bony substance covering the root of a tooth [syn: cementum, cement]

Merriam Webster's

noun Etymology: New Latin, from Latin caementum Date: 1842 a specialized bony layer of connective tissue covering the dentin of the part of a tooth normally within the gum — see tooth illustration

Webster's 1913 Dictionary

Cement Ce*ment" (s[e^]*m[e^]nt" or s[e^]m"[e^]nt), n. [OF. cement, ciment, F. ciment, fr. L. caementum a rough, unhewn stone, pieces or chips of marble, from which mortar was made, contr. fr. caedimentum, fr. caedere to cut, prob. akin to scindere to cleave, and to E. shed, v. t.] 1. Any substance used for making bodies adhere to each other, as mortar, glue, etc. 2. A kind of calcined limestone, or a calcined mixture of clay and lime, for making mortar which will harden under water. 3. The powder used in cementation. See Cementation, n., 2. 4. Bond of union; that which unites firmly, as persons in friendship, or men in society. ``The cement of our love.'' 5. (Anat.) The layer of bone investing the root and neck of a tooth; -- called also cementum. Hydraulic cement. See under Hydraulic.