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bi

[bahy] /baɪ/
adjective, noun, plural bis, bi's.
1.
Slang. bisexual.
Origin
by shortening

BI

1.
plural BI's. built-in.

Bi

Symbol, Chemistry
1.

bi-1

1.
a combining form meaning “twice,” “two,” used in the formation of compound words:
bifacial; bifarious.
Compare bin-.
Origin
< Latin, combining form of bis; see twice
Usage note
All words except biennial referring to periods of time and prefixed by bi-1 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.” To avoid confusion, it is better to use the prefix semi- to mean “twice each” (semiannual; semimonthly; semiweekly) or the phrase twice a or twice each (twice a month; twice a week; twice each year), and for the other sense to use the phrase every two (every two months; every two weeks; every two years).

bi-2

1.
variant of bio-, especially before a vowel:
biopsy.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for bi

bi1

/baɪ/
adjective, noun
1.
(slang) short for bisexual (sense 1), bisexual (sense 6)

bi2

abbreviation
1.
Burundi

Bi

Chemical symbol
1.
bismuth

bi-1

combining form
1.
two; having two: bifocal
2.
occurring every two; lasting for two: biennial
3.
on both sides, surfaces, directions, etc: bilateral
4.
occurring twice during: biweekly
5.
  1. denoting an organic compound containing two identical cyclic hydrocarbon systems: biphenyl
  2. (rare in technical usage) indicating an acid salt of a dibasic acid: sodium bicarbonate
  3. (not in technical usage) equivalent of di-1 (sense 2a)
Word Origin
from Latin, from bistwice

bi-2

combining form
1.
a variant of bio-
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Contemporary definitions for bi
Dictionary.com's 21st Century Lexicon
Copyright © 2003-2014 Dictionary.com, LLC
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Word Origin and History for bi
adj.

1956 as a colloquial abbreviation of bisexual.

bi-

word-forming element meaning "two, twice, double, doubly, once every two," etc., from Latin bi- "twice, double," from Old Latin dvi- (cognate with Sanskrit dvi-, Greek di-, Old English twi- "twice, double"), from PIE root *dwo- "two." Nativized from 16c. Occasionally bin- before vowels; this form originated in French, not Latin, and might be partly based on or influenced by Latin bini "twofold" (see binary).

Online Etymology Dictionary, © 2010 Douglas Harper
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bi in Medicine

Bi
The symbol for the element bismuth.

bi- 1 or bin-
pref.

  1. Two: bilateral.

  2. Both: binaural.

  3. Both sides, parts, or directions: biconcave.

  4. Containing twice the proportion of a specified chemical element or group necessary for stability: bicarbonate.

  5. Containing two chemical atoms, radicals, or groups: biphenyl.

bi- 2
pref.
Variant of bio-.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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bi in Science
Bi  
The symbol for bismuth.
bismuth
  (bĭz'məth)   
Symbol Bi
A brittle, pinkish-white, crystalline metallic element that occurs in nature as a free metal and in various ores. Bismuth is the most strongly diamagnetic element and has the highest atomic number of all stable elements. It is used to make low-melting alloys for fire-safety devices. Atomic number 83; atomic weight 208.98; melting point 271.3°C; boiling point 1,560°C; specific gravity 9.747; valence 3, 5. See Periodic Table.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Slang definitions & phrases for bi

bi

adjective

Bisexual; ac-dc

noun

: I think maybe Vi is a bi (1960s+)


The Dictionary of American Slang, Fourth Edition by Barbara Ann Kipfer, PhD. and Robert L. Chapman, Ph.D.
Copyright (C) 2007 by HarperCollins Publishers.
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bi in Technology

networking
The country code for Burundi.
(1999-01-27)

The Free On-line Dictionary of Computing, © Denis Howe 2010 http://foldoc.org
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Related Abbreviations for bi

bi

Bislama

Bi

  1. bisexual
  2. bismuth

BI

  1. background information
  2. bodily injury
  3. built-in
The American Heritage® Abbreviations Dictionary, Third Edition
Copyright © 2005 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Encyclopedia Article for bi

in art, Chinese jade carved in the form of a flat disk with a hole in the centre. The earliest examples, which are unornamented, date from the Neolithic Period (c. 5000-2000 BC). Later examples, from the Shang (18th-12th century BC) and Zhou dynasties (1111-256/255 BC), have increasingly elaborate surface embellishment, especially in the late Zhou (c. 600-256/255 BC), when the bi appeared in combination with other forms

Learn more about bi with a free trial on Britannica.com
Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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