Dī-gām'mā, n.

n. [Gr. δίγαμμα, from δί, for δὶς, twice, double, and γάμμα, the letter Γ; — so called because it resembled two gammas placed one above the other.] (Gr. Gram.) A letter (Ϝ) of the Greek alphabet, which early fell into disuse. It corresponded in power to the Latin u, v, being pronounced, probably, much like the English w.