[ si-men-tuh m ]
/ sɪˈmɛn təm /

noun Dentistry.

the bonelike tissue that forms the outer surface of the root of the tooth.

Origin of cementum

1605–15; < Latin, variant of caementum rough stone; see cement
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for cementum

  • Teeth-enamel is formed from the epiblast, and dentine, cementum, pulp (except as to nerve tissue) from the mesoblast.

    Degeneracy|Eugene S. Talbot

British Dictionary definitions for cementum


/ (sɪˈmɛntəm) /


a thin bonelike tissue that covers the dentine in the root of a tooth

Word Origin for cementum

C19: New Latin, from Latin: cement
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Medicine definitions for cementum


[ sĭ-mĕntəm ]


A bonelike substance covering the root of a tooth.cement
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.