SECUNDINES
Noun
secundines
plural of secundine
Source: Wiktionary
SECUNDINE
Sec"un*dine, n. Etym: [Cf. F. secondine.]
1. (Bot.)
Definition: The second coat, or integument, of an ovule, lying within the
primine.
Note: In the ripened seed the primine and secundine are usually
united to form the testa, or outer seed coat. When they remain
distinct the secundine becomes the mesosperm, as in the castor bean.
2. Etym: [Cf. F. secondines.]
Definition: The afterbirth, or placenta and membranes; -- generally used in
the plural.
Source: Webster’s Unabridged Dictionary 1913 Edition