English
icosi-
Icosi- comes from Ancient Greek εἴκοσι ‘twenty’, from Proto-Indo-European *déḱm̥ ‘ten’, and ultimately from *dwi- ‘two’.
- Proto-Indo-Europeanc. 4500–2500 BCE*dwi-‘two’reconstructed
- Proto-Indo-European, derivedc. 4500–2500 BCE*déḱm̥‘ten’reconstructed
- Proto-Indo-European, derivedc. 4500–2500 BCE*(h₁)wídḱm̥tih₁‘twenty’reconstructed
- Proto-Hellenicc. 2200–1600 BCE*ewī́kətireconstructed
- Ancient Greekc. 800–300 BCEεἴκοσιeíkosi‘twenty’
- Englishtodayicosi-
attested reconstructed ? uncertain or disputed
Lineage
- Proto-Indo-Europeanc. 4500–2500 BCE*dwi-‘two’reconstructed
- Proto-Indo-European, derivedc. 4500–2500 BCE*déḱm̥‘ten’reconstructed
- Proto-Indo-European, derivedc. 4500–2500 BCE*(h₁)wídḱm̥tih₁‘twenty’reconstructed
- Proto-Hellenicc. 2200–1600 BCE*ewī́kətireconstructed
- Ancient Greekc. 800–300 BCEεἴκοσιeíkosi‘twenty’
- Englishtodayicosi-
Linked words
through Proto-Indo-European *dwi- ‘two’
with, double, pimpernel, 24 more
through Proto-Indo-European *déḱm̥ ‘ten’
ten, century, cent, hundred, decade, dean, dick, dozen, den, sen, diner, decimal, hectare, tenfold, denier, deca, dwt, doyen, deni, 51 more
Today it means
prefix —
Language periods are conventional ranges, not dates for this word.
Etymograph / Proto-Indo-European *dwi- / icosi-