• (n.) The outermost of the two integuments of an ovule.
Pri'mine noun [ Latin primus first: confer French primine .] (Botany) The outermost of the two integuments of an ovule. » This word has been used by some writers to denote the inner integument, which is formed earlier than the outer. Confer Secundine .
the outer integument of an ovule. Cf.