"bi-" Prefix List

bi-

two

biped

a two-footed creature

bicuspid

a two-pointed tooth located in the side of the jaw

bicycle

a vehicle with two wheels

bilingual

able to speak two different languages

biplane

an airplane with two pairs of wings

bifocals

eyeglasses with lenses that have two different sections - for seeing close up and far away

bimonthly

happening every two months

biweekly

happening every two weeks

biennial

happening every two years

bicolor

having two different colors