A cell of mesenchymal origin concerned with the formation of the layer of cementum on the roots of teeth. [L. cementum, cement, + G. blastos, germ]
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ce·ment·o·blast si-'ment-ə-.blast n one of the specialized osteoblasts of the dental sac that produce cementum
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ce·men·to·blast (sə-menґto-blast) [cemento- + -blast] a large cell ranging in shape from cuboidal to squamous with a large central nucleus and usually a single nucleolus, which is active in the formation of cementum (cementogenesis).Medical dictionary. 2011.