penta-

a combining form occurring in loanwords from Greek, meaning “five” (Pentateuch); on this model, used in the formation of compound words (pentavalent).
Also especially before a vowel, pent-.

Origin of penta-

< Greek pent-, penta-, comb. forms representing pénte five

Words nearby penta-

pensée, pensées, pent, pent-up, pent., penta-, pentachloronitrobenzene, pentachlorophenol, pentacle, pentad, pentadactyl

British Dictionary definitions for penta-

penta-

combining form

five pentagon; pentameter; pentaprism

Word Origin for penta-

from Greek pente five

Medical definitions for penta-

penta-

pref.

Five:pentameter.
Containing five atoms, molecules, or groups:pentose.