BIPRISM


Meaning of BIPRISM in English

ˈbī+ˌ- noun

Etymology: bi- (I) + prism

: a triangular prism with vertex angle of nearly 180° used to obtain images of a single source in observing the interference of light — called also Fresnel biprism

Webster's New International English Dictionary.      Новый международный словарь английского языка Webster.