bi-
prefix/baɪ-/ · /bɪ-/
Etymology PIE word *dwóh₁ Borrowed from Latin bi-, from Proto-Italic *dwi-, from Proto-Indo-European *dwi-. Doublet of twi- and di-.
12 senses
- 1Two in number.
- 2Having or possessing two of the root word's quality.
- 3Both: referring to two as a set.
- 4Being different in two ways with respect to the root.
- 5Forked, divided by two, halved; (chemistry, proscribed) half
- 6Double, twofold.
- 7Bisexual, relating to bisexuality.
- 8Bilateral, on both sides of the body.
- 9Twice.
- 10Every two; a rate of once every two.
- 11A pair of; composed of two.
- 12Used for the digit two to form systematic element names…
Morpheme Two in number.
- biarticular
- biaxial
1 more example
- bicoloured
Morpheme Having or possessing two of the root word's quality.
- biangular
- biantheriferous
2 more examples
- bicardial
- bikont
Morpheme Both: referring to two as a set.
- biacetabular
- biallelic
1 more example
- bicaval
Morpheme Being different in two ways with respect to the root.
- biadjoint
- biaffine
1 more example
- biclonal
Morpheme Forked, divided by two, halved; (chemistry, proscribed) half
- bifurcate
- bicapitate
1 more example
- bicarinate
Morpheme Double, twofold.
- bialgebroid
- bifarious
1 more example
- biarticulated
Morpheme Bisexual, relating to bisexuality.
- bicentric
- biphobia
1 more example
- biromantic
Morpheme Twice.
- biannual
- biannual
1 more example
- biconjugate
Morpheme Every two; a rate of once every two.
- biannual
- bicentennial
Morpheme A pair of; composed of two.
- bibrow
- bicomplex
Chemistry, Natural sciences, Physical sciences Morpheme Used for the digit two to form systematic element names of elements whose existence has been predicted, and which have not yet been given a trivial name.
- un- (“1”) + bi- (“2”) + un- (“1”) + -ium (element suffix) → unbiunium (“element 121”)
- Derived terms
169 terms
bi, biannual, biautomaton, biceps, bichrome, bicolor, bicolour, biconvex, bicornuate, bicycle, bicyclic, bicylindrical, bidentate, bidirectional, biennial, bifacial, bifocals, bigender, bijugate, bilabial, bilabiate, bilanguage, bilateral, bilinear, bilingual, billion, bilobate, bilogarithmic, bilogarithmical, bimanual, bimester, bimetal, bimonthly, binary, binomial, biped, biplane, bipod, bipolar, birefringent, bireme, birotate, biscuit, bisect, bisection, bisector, biserrate, bisexual, bisexuality, bitartrate, bivalve, biweekly, bialgebra, bialkali, bialtitude, biamping, biandry, biangle, biantennary, bianthraquinone, biarc, biarchy, biareal, biarsenical, biarticular, biarticulate, biaryl, biauricular, biaxial, bibenzimidazole, bibenzyl, bicalicene, bicameral, bicolouration, bicoloured, bicolpate, bicolumnar, bicombing, bicommunal, bicompartmental, bicompetent, bicomponent, biconceptual, biconditional, bicondylar, bicone, biconic, biconical, biconjugate, biconnected, biconsonantal, biconstituent, bicontinental, bicontinuous, bicorn, biraryl, biacid, biacuminate, bialate, biangular, biannulate, biantheriferous, biapical, biarcuate, biarmed, biaspectual, biauriculate, biautomatic, bibasic, bibracteate, bibracteolate, bicalcarate, bicallose, bicardial, bicarotid, bicarpellate, bicaudal, bicaudate, bicausal, bicellular, bicentric, bicentrism, bicephalic, bicephalism, bicephalous, bicephaly, bichambered, bichord, bicoordinate, biforate, bikont, bilete, bimastism, bisemic, bisemous, biacetabular, biallelic, biamorous, biasterionic, biatrial, bicanonical, bicaval, biclosed, bicommissural, biromantic, biune, biadjoint, biaffine, biclonal, bicomposite, bicongenic, biloquist, bicameralism, bicapitate, bicarinate, bifid, bifurcate, bipartism, bialgebroid, biarticulated, bicapsular, bicommutant, bifarious, biphobia, biballism, biconcave, bicentennial, bibrow, bicomplex