Advertisement

Advertisement

View synonyms for trifocal

trifocal

[ trahy-foh-kuhl, trahy-foh- ]

adjective

  1. Optics. having three foci.
  2. (of an eyeglass lens) having three portions, one for near, one for intermediate, and one for far vision.

noun

  1. trifocals, eyeglasses with trifocal lenses.

trifocal

adjective

  1. having three focuses
  2. having three focal lengths
“Collins English Dictionary — Complete & Unabridged” 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

noun

  1. plural glasses with trifocal lenses
“Collins English Dictionary — Complete & Unabridged” 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Discover More

Word History and Origins

Origin of trifocal1

First recorded in 1945–50; tri- + focal

Advertisement

Related Words

Advertisement

Advertisement

Advertisement

trifluralintrifold

Browse

  • #
  • aa
  • bb
  • cc
  • dd
  • ee
  • ff
  • gg
  • hh
  • ii
  • jj
  • kk
  • ll
  • mm
  • nn
  • oo
  • pp
  • qq
  • rr
  • ss
  • tt
  • uu
  • vv
  • ww
  • xx
  • yy
  • zz