英语词汇lens的起源、历史背景-英语词源词典

词汇	lens
词源	lens n. 1690s, "glass to regulate light rays," from Latin lens (genitive lentis) "a lentil," on analogy of the double-convex shape. See lentil. Anatomical use, of the eye part, from 1719. Lens-cap is from 1857. In the vernacular of the photographer, anyone crowding to the front of a group, staring into the lens, or otherwise attracting attention to himself is known as a "lens louse." ["American Photography," vol. xl, 1946; the term dates from 1915] Entries linking to lens lentil n. type of annual leguminous plant, also its edible seed, mid-13c., from Old French lentille "lentil," also "a freckle" (12c.), from Latin lenticula, diminutive of Latin lens (genitive lentis) "lentil plant, a lentil," cognate with Greek lathyros "pulse;" Old High German German linsa, German linse "a lentil;" Old Church Slavonic lęšta, Russian ljač. The similarity between Slavic, Gm. and Latin seems too great to be coincidental, but a common preform cannot be reconstructed. Like other agricultural terms, 'lentil' may have been borrowed from a non-IE language in Europe. [de Vaan] updated on September 25, 2018
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lens n.