O*don"to*blast (?), n. [Odonto- + -blast.]
1. 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.
2. Zool.
One of the cells which secrete the chitinous teeth of Mollusca.
© Webster 1913.