bi

play
noun or adjective \ˈbī\

Definition of bi

First Known Use of bi

1956


Bi

symbol

Definition of Bi

  1. bismuth

Other Chemical Engineering Terms


1

bi-

prefix

Definition of bi-

  1. 1a :  two bilateralb :  coming or occurring every two bicentennialc :  into two parts bisect

  2. 2a :  twice :  doubly :  on both sides biconvexb :  coming or occurring two times biannual — compare semi-

  3. 3 :  between, involving, or affecting two (specified) symmetrical parts bilabial

  4. 4a :  containing one (specified) constituent in double the proportion of the other constituent or in double the ordinary proportion bicarbonateb :  di- 2 biphenyl

What do bimonthly and biweekly mean?

Many people are puzzled about bimonthly and biweekly, which are often ambiguous because they are formed from two different senses of bi-: “occurring every two” and “occurring two times.” This ambiguity has been in existence for nearly a century and a half and cannot be eliminated by the dictionary. The chief difficulty is that many users of these words assume that others know exactly what they mean, and they do not bother to make their context clear. So if you need bimonthly or biweekly, you should leave some clues in your context to the sense of bi- you mean. And if you need the meaning “twice a,” you can substitute semi- for bi-. Biannual and biennial are usually differentiated.

Origin and Etymology of bi-

Middle English, from Latin — more at twi-


2

bi-

combining form
variants: or

bio-

Definition of bi-

  1. 1 :  life :  living organisms or tissue bioluminescence biosphere

  2. 2 :  biographical biopic

Origin and Etymology of bi-

Greek, from bios mode of life — more at quick


BI Defined for English Language Learners

bi-

prefix

Definition of bi- for English Language Learners

  • : two

  • : coming or happening every two

  • : coming or happening two times


BI- Defined for Kids

bi-

prefix

Definition of bi- for Students

  1. 1 :  two biped

  2. 2 :  coming or occurring every two biennial

  3. 3 :  into two parts bisect

  4. 4 :  twice :  doubly :  on both sides


Medical Dictionary

Bi

symbol

Medical Definition of Bi

  1. bismuth


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