tetra- etymology

English word tetra- comes from Proto-Indo-European *kʷétesres, and later Proto-Hellenic *kʷétwores (Four.)

Detailed word origin of tetra-

Dictionary entryLanguageDefinition
*kʷétesres Proto-Indo-European (ine-pro)
*kʷétwores Proto-Hellenic (grk-pro) Four.
τέσσαρες Ancient Greek (grc)
tetra- English (eng) Four.