Bot. [ad. mod.L. spermoderma, -dermis (De Candolle) or F. spermoderme: see prec. and DERM.] The combined outer and inner integuments of a seed, or the outer of these by itself.
1841. Penny Cycl., XXI. 184/1. The external coverings of the seed are called the testa, perisperm, or spermoderm.
1861. Bentley, Man. Bot., 337. Some writers use the word testa in a general sense for the two integuments, and call the external one spermoderm.
1864. New Syd. Soc. Year-bk. Med. & Surg. for 1863, 427. The spermoderm of the bean is also poisonous.