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: B B- B. Ba Bb Bc Bd Be Bh Bi Bj Bk Bl Bm Bn Bo Bp Br Bs Bt Bu Bv Bw By
bifilar | biflabellate | biflagellate | biflorate | biflorous | bifocal | bifocals | bifold | bifoliate | bifoliolate | biforate

bifocal

 : 
Adjective
 : 
bi=fo=cal

CIDE DICTIONARY

bifocala. [Pref. bi-+ focal.].
     Having two foci, as some spectacle lenses.  [Webster 1913 Suppl.]
bifocaln. [Pref. bi-+ focal.].
     a bifocal lens.  [PJC]

OXFORD DICTIONARY

bifocal, adj. & n.
--adj. having two focuses, esp. of a lens with a part for distant vision and a part for near vision.
--n. (in pl.) bifocal spectacles.


For further exploring for "bifocal" in Webster Dictionary Online


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