trifocal
Involving three fociInvolving three foci.
Meaning
2 senses(not comparable)Involving three foci.
(not comparable)Of 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.By surface analysis, tri- + focal, or, by surface analysis, tri- + foc(us) + -al.
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Word family
3 related wordsDerivedtrifocalization