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bi-
(BY)two
Latin for two. A bicycle has two wheels; binoculars use two eye-pieces.
prefixLatin
Number & quantityExample words
bicycle
a vehicle with two wheels
bilingual
able to speak two languages
biennial
happening every two years
biped
an animal with two feet
Common Core alignment
Grades served: 4, 5
- L.4.4bUse common, grade-appropriate Greek and Latin affixes and roots as clues to the meaning of a word (e.g., telegraph, photograph, autograph).
- L.5.4bUse common, grade-appropriate Greek and Latin affixes and roots as clues to the meaning of a word (e.g., photograph, photosynthesis).
Number & quantity. Roots that count, measure, and tell you how many.
Browse all number & quantity roots →L.4.4bL.5.4b