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单词 bifocal
释义

WordReference Random House Learner's Dictionary of American English © 2024
bi•fo•cal /baɪˈfoʊkəl, ˈbaɪˌfoʊ-/USA pronunciation   adj. 
  1. Opticshaving two points of focus.
  2. Ophthalmology(of an eyeglass or contact lens) having two portions, one for near and one for far vision:wasn't ready for bifocal lenses just yet.

n. [plural]
  1. bifocals, bifocal eyeglasses or contact lenses:With my bifocals I can read and see things at a distance.

WordReference Random House Unabridged Dictionary of American English © 2024
bi•fo•cal  (bī fō′kəl, bī′fō′-),USA pronunciation adj. 
  1. Optics[Chiefly Optics.]having two foci.
  2. Ophthalmology(of an eyeglass or contact lens) having two portions, one for near and one for far vision.

n. 
  1. bifocals, bifocal eyeglasses or contact lenses.
  • bi-1 + focal 1885–90, American.

Collins Concise English Dictionary © HarperCollins Publishers::
bifocal /baɪˈfəʊkəl/ adj
  1. having two different focuses
  2. relating to a compound lens permitting near and distant vision
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更新时间：2025/7/23 18:47:05