PENTAPRISM


Meaning of PENTAPRISM in English

ˈpentə+ˌ- noun

Etymology: penta- + prism

: a pentagonal prism having one angle 90° and the others 112° 30′, producing a constant deviation of 90° for any wavelength, and used as a reflector in range finders

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