English
icositetragon
From icosi- + tetra- + -gon.
Formed from icosi- + tetra- + -gon
Proto-Indo-European *dwi- ‘two’
Proto-Indo-European *déḱm̥ ‘ten’
Proto-Indo-European *(h₁)wídḱm̥ti ‘twenty’
Proto-Hellenic *ewī́kəti
Ancient Greek εἴκοσι ‘twenty’
English icosi-
Proto-Indo-European *kʷetwóres ‘four’
Proto-Hellenic *kʷétwores ‘four’
Ancient Greek τέσσαρες ‘four’
Ancient Greek τέτταρες ‘Attic form of τέσσαρες’
English tetra-
Today it means
noun A polygon with 24 sides and 24 angles.
Language periods are conventional ranges, not dates for this word.
Etymograph / icositetragon