Definition:Number Prefixes/7/Hepta-

Definition

The prefix hepta- denotes $7$.

Examples

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

• heptad: a set or ordered tuple with $7$ elements

• heptagon: a polygon with $7$ sides and hence $7$ vertices

• heptahedron: a polyhedron with $7$ faces

Linguistic Note

The prefix hepta- is from the Classical Greek ἑπτά (heptá), meaning seven.

Sources

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