What does the prefix tri- mean?

What does the prefix tri- mean?

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

Answer: (B)

Tri- is a prefix that indicates there are three parts or a threefold form. When you see it, think three. For example, a triangle has three sides, a tricycle has three wheels, and a trilogy refers to three related works. This helps you recognize and decode many medical and everyday terms that describe something with three components. The other numeric prefixes you’ll encounter are uni- for one, bi- for two, and quad- (or tetra-) for four. So tri- clearly signals the number three.

Tri- is a prefix that indicates there are three parts or a threefold form. When you see it, think three. For example, a triangle has three sides, a tricycle has three wheels, and a trilogy refers to three related works. This helps you recognize and decode many medical and everyday terms that describe something with three components. The other numeric prefixes you’ll encounter are uni- for one, bi- for two, and quad- (or tetra-) for four. So tri- clearly signals the number three.