trifocal

tri·fo·cal

T t

Transcription

- US Pronunciation
- US IPA
- UK Pronunciation
- UK IPA
- [trahy-foh-kuh l, trahy-foh-]
- /traɪˈfoʊ kəl, ˈtraɪˌfoʊ-/
- /traɪ.ˈfəʊkəl/

- US Pronunciation
- US IPA
- [trahy-foh-kuh l, trahy-foh-]
- /traɪˈfoʊ kəl, ˈtraɪˌfoʊ-/

Definitions of trifocal word

adjective trifocal Optics. having three foci. 1
adjective trifocal (of an eyeglass lens) having three portions, one for near, one for intermediate, and one for far vision. 1
noun trifocal trifocals, eyeglasses with trifocal lenses. 1
adjective trifocal having three focuses 0
adjective trifocal having three focal lengths 0
noun trifocal glasses with trifocal lenses 0

See all 8 definitions of trifocal

Information block about the term

Origin of trifocal

First appearance:

before 1945

One of the 6% newest English words

First recorded in 1945-50; tri- + focal

Historical Comparancy

Parts of speech for Trifocal

noun

adjective

verb

adverb

pronoun

preposition

conjunction

determiner

exclamation

Full grammatical hierarchy of Trifocal

trifocal popularity

A pretty common term. Usually people know it’s meaning, but prefer to use a more spread out synonym. About 59% of English native speakers know the meaning and use word.

According to our data about 56% 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.

trifocal usage trend in Literature

This diagram is provided by Google Ngram Viewer

Synonyms for trifocal

noun trifocal

bifocal — having two different focuses
bifocals — Bifocals are glasses with lenses made in two halves. The top part is for looking at things some distance away, and the bottom part is for reading and looking at things that are close.
lens — a piece of transparent substance, usually glass, having two opposite surfaces either both curved or one curved and one plane, used in an optical device in changing the convergence of light rays, as for magnification, or in correcting defects of vision.
menisci — a crescent or a crescent-shaped body.
meniscus — a crescent or a crescent-shaped body.

All 11 Synonyms of trifocal