bifocal

3 definitions found

bifocal - Collaborative International Dictionary of English v.0.48 :

  Bifocal \Bi"fo`cal\, n. [Pref. bi-+ focal.]
     a bifocal lens.
     [PJC]

  Bifocal \Bi"fo`cal\, a. [Pref. bi-+ focal.]
     Having two foci, as some spectacle lenses.
     [Webster 1913 Suppl.]

bifocal - WordNet (r) 2.1 (2005) :

  bifocal
      adj 1: having two foci; "bifocal eyeglasses"