pentaprism
noun
pen·ta·prism
ˈpentə+ˌ-
: 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
Word History
Etymology
penta- + prism
- double fertilization
- double figures
- double first
- double fisherman's knot
- double flageolet
- double flaming
- double flat
- double floor
- double foul
- double fugue
- double genitive
- double glazing
- double glouces
- Double Gloucester
- double gown
- double gun
- double helix
- double house
- double hyphen
- double in
- double indemnity
- double insurance
- double jeopardy
- double jeopardy clause
- double jump