Definition:Number Prefixes/20/Icosa-
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Definition
The prefix icosa denotes $20$.
Examples
The prefix icosa- can be found in the following contexts:
- icosahedron: a polyhedron with $20$ faces
Linguistic Note
The prefix icosa- is from the Ancient Greek eíkosi (εἴκοσι), meaning twenty.
Sources
- 1989: Ephraim J. Borowski and Jonathan M. Borwein: Dictionary of Mathematics ... (previous) ... (next): icosa-
- 2014: Christopher Clapham and James Nicholson: The Concise Oxford Dictionary of Mathematics (5th ed.) ... (previous) ... (next): icosa-