pentaprism

pen·ta·prism

P p

Transcription

- US Pronunciation
- US IPA
- [pen-tuh-priz-uh m]
- /ˈpɛn təˌprɪz əm/

- US Pronunciation
- US IPA
- [pen-tuh-priz-uh m]
- /ˈpɛn təˌprɪz əm/

Definitions of pentaprism word

noun pentaprism a prism that has five faces, a pair of which are at 90° to each other; a ray entering one of the pair emerges from the other at an angle of 90° to its original direction: used especially in single-lens reflex cameras to reverse images laterally and reflect them to the viewfinder. 1
noun pentaprism a five-sided prism that deviates light from any direction through an angle of 90°, typically used in single-lens reflex cameras between lens and viewfinder to present the image the right way round 0

See all 2 definitions of pentaprism

Information block about the term

Origin of pentaprism

First appearance:

before 1935

One of the 8% newest English words

First recorded in 1935-40; penta- + prism

Historical Comparancy

Parts of speech for Pentaprism

noun

adjective

verb

adverb

pronoun

preposition

conjunction

determiner

exclamation

Full grammatical hierarchy of Pentaprism

pentaprism popularity

A pretty common term. Usually people know it’s meaning, but prefer to use a more spread out synonym. About 51% of English native speakers know the meaning and use word.

According to our data about 68% of words is more used. This is a rare but used term. It occurs in the pages of specialized literature and in the speech of educated people.

pentaprism usage trend in Literature

This diagram is provided by Google Ngram Viewer