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10 terms

Prefix: BI-

BI- = TWO
STUDY
PLAY
bicolor
having two different colors
bicuspid
a two-pointed tooth
bicycle
a vehicle with two wheels
biennial
happening every two years
bifocals
eyeglasses with lenses that have two different sections -- for seeing close up and far away
bilingual
able to speak two different languages
bimonthly
happening everyt two months
biped
a two-footed creature
biplane
an airplane with two pairs of wings
biweekly
happening every two weeks