| 单词 | trifocal |
| 释义 | trifocal[ trahy-foh-kuhl, trahy-foh- ] / traɪˈfoʊ kəl, ˈtraɪˌfoʊ- / SEE SYNONYMS FOR trifocal ON THESAURUS.COM adjectiveOptics. having three foci. (of an eyeglass lens) having three portions, one for near, one for intermediate, and one for far vision. nountrifocals, eyeglasses with trifocal lenses. Origin of trifocalFirst recorded in 1945–50; tri- + focal Words nearby trifocaltrifling, trifluoperazine, trifluoride, trifluorochloromethane, trifluralin, trifocal, trifocal lens, trifold, trifoliate, trifoliate orange, trifoliolate Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020 British Dictionary definitions for trifocaltrifocal adjective (traɪˈfəʊkəl)having three focuses having three focal lengths noun (traɪˈfəʊkəl, ˈtraɪˌfəʊkəl)(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 |
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