What does the prefix bi- mean?

What does the prefix bi- mean?

• A. Two
• B. Three
• C. Four
• D. Five

Answer: (A)

Bi- means two. It shows there are two of something or a pair. For example, bicycle has two wheels, and binoculars have two lenses. In terms like biweekly, the core idea is two, though the exact schedule can vary in everyday use. Other numbers are described by different prefixes, such as tri- for three and quadri- for four. So the meaning two is the best fit.

Bi- means two. It shows there are two of something or a pair. For example, bicycle has two wheels, and binoculars have two lenses. In terms like biweekly, the core idea is two, though the exact schedule can vary in everyday use. Other numbers are described by different prefixes, such as tri- for three and quadri- for four. So the meaning two is the best fit.