The Collaborative International Dictionary
Odontoblast \O*don"to*blast\, n. [Odonto- + -blast.]
(Anat.) One of the more or less columnar cells on the outer surface of the pulp of a tooth; an odontoplast. They are supposed to be connected with the formation of dentine.
(Zo["o]l.) One of the cells which secrete the chitinous teeth of Mollusca.
Wiktionary
n. A cell on the outer surface of dental pulp that produces tooth dentin
Wikipedia
In vertebrates, an odontoblast is a cell of neural crest origin that is part of the outer surface of the dental pulp, and whose biological function is dentinogenesis, which is the formation of dentin, the substance beneath the tooth enamel on the crown and the cementum on the root.
Usage examples of "odontoblast".
The few remaining teeth showed a striking pathology: a separation of the odontoblast layer from the dentin.