Definition:Number Prefixes/3/Tri-

Definition

The prefix tri- denotes $3$.

Examples

The prefix tri- can be found in the following contexts:

• triangle, also known less commonly as trigon: a polygon with $3$ sides and hence $3$ vertices

• trilateral configuration: a configuration with $3$ sides or lines

Linguistic Note

The prefix tri- derives from the Latin trēs and Classical Greek τρι (tri) both meaning three.

Sources

• 1989: Ephraim J. Borowski and Jonathan M. Borwein: Dictionary of Mathematics ... (previous) ... (next): tri-
• 2014: Christopher Clapham and James Nicholson: The Concise Oxford Dictionary of Mathematics (5th ed.) ... (previous) ... (next): tri-