\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. (Zo["o]l.) One of the cells which secrete the chitinous
   teeth of Mollusca.