Definitions for bi-

This page provides all possible meanings and translations of the word bi-

Random House Webster's College Dictionary

bibaɪ(adj.; n.)(pl.)

  1. bis, bi's.Slang. bisexual.

    Category: Common Vocabulary, Status (usage)

Origin of bi:

1955–60; by shortening


  1. bismuth.

    Category: Chemistry

* Chem. Symbol..


  1. a combining form meaning “twice,”“two”bicarbonate.

    Category: Affix

* Usage: Most words referring to periods of time and prefixed by bi- are potentially ambiguous. Since bi - can be taken to mean either “twice each” or “every two,” a word like biweekly can be understood as “twice each week” or “every two weeks.” Confusion is often avoided by using the prefix semi- meaning “twice each” (semiweekly; semimonthly; semiannual) or by using the appropriate phrases: twice a week; twice each month; every two months; every two years.

Origin of bi-:

< L; cf. twi -


  1. bi-(Prefix)


  2. bi-(Prefix)


  3. Origin: From bī "by, near, around". More at bī

Webster Dictionary

  1. Bi-

    in most branches of science bi- in composition denotes two, twice, or doubly; as, bidentate, two-toothed; biternate, doubly ternate, etc

  2. Bi-

    in the composition of chemical names bi- denotes two atoms, parts, or equivalents of that constituent to the name of which it is prefixed, to one of the other component, or that such constituent is present in double the ordinary proportion; as, bichromate, bisulphide. Be- and di- are often used interchangeably

Translations for bi-

Kernerman English Multilingual Dictionary


(of an actor, rôle etc) secondary to the leading actor, rôle etc

He has had many supporting r; ôles; a supporting cast.

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