trifocal

T1R1I1F4O1C3A1L1

adjective

Involving three foci.

UncommonScrabble 13
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Meanings

adjectivetrifocal (not comparable)
  1. not comparableengineeringInvolving three foci.
  2. not comparableengineeringOf or pertaining to corrective lenses that have three different powers per eye.

Origin

By surface analysis, tri- + focal, or, by surface analysis, tri- + foc(us) + -al.

Full word history & related roots →
Cite this entry
APA

trifocal. (n.d.). In WatkinsX Dictionary. Retrieved November 3, 2026, from https://dictionary.watkinsx.com/word/trifocal

MLA

“trifocal.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/trifocal. Accessed November 3, 2026.

Chicago

WatkinsX Dictionary, s.v. “trifocal,” accessed November 3, 2026, https://dictionary.watkinsx.com/word/trifocal.

Source: trifocal on Wiktionary, CC BY-SA 4.0.