O-pāque'1, a.
(o-pāk'), a. [Fr. opaque, Lat. opacus. See OPACOUS.] [Written also opake.]
Sense 1. Impervious to the rays of light; not transparent; as, an opaque substance.
Sense 2. Dark; obscure.
2 entries under this word
Opaque
O-pāque'2, n.
n. That which is opaque; opacity; opaqueness. [Rare.]