Etymology Explorer › English

Where does “icosa-” come from?

icosa- (English) comes from Ancient Greek εἴκοσι, from Proto-Hellenic ewīkəti, from Proto-Indo-European wídḱm̥ti, from Proto-Indo-European dwidḱómt, from Proto-Indo-European déḱm̥t — ten.

icosa- (English): API; twenty

Definitions

  1. API; twenty

Ancestry of “icosa-”, step by step

StepLanguageWordMeaning
1Ancient Greekεἴκοσιtwenty
2Proto-Hellenicewīkəti—
3Proto-Indo-Europeanwídḱm̥titwenty
4Proto-Indo-Europeandwidḱómt—
5Proto-Indo-Europeandéḱm̥tten

Words derived from “icosa-”

  • icosahedral
  • icosahedrally
  • icosahedrality
  • nonicosahedral
  • icosasphere
  • icosagrid
Every word from Proto-Indo-European déḱm̥t →