The Collaborative International Dictionary
Primine
Primine \Pri"mine\, n. [L. primus first: cf. F. primine.] (Bot.) The outermost of the two integuments of an ovule.
Note: This word has been used by some writers to denote the inner integument, which is formed earlier than the outer. Cf. Secundine.
Wiktionary
primine
n. (context botany English) The outermost integument of an ovule (if it has two)