OPAQUE

An Illustrated Encyclopedic Medical Dictionary · 1894 · p. 6

adj. Op-ak'. Lat., opacus. Fr., o. Ger., undurchsichtig (1st def.), matt (3d def.), glanzlos (2d def.). 1. Impervious to light. 2. Of a dull color, [a, 48.] [s. 144]