Definition of: geminate

(jem′ə·nāt) v.t. & v.i. ·nat·ed, ·nat·ing
1. To make or become double; pair.
2. Ling. To double a phoneme, particularly a consonant.
—adjective (-nit) Bot. Occurring in pairs or couples, as leaves. [<L geminatus, pp. of geminare <geminus a twin]
—gem′i·na′tion noun