Meaning

noun a person who speaks more than one language

adjective having a command of or composed in many languages

originPIE word *glōgʰs Borrowed from Attic Greek πολύγλωττος (polúglōttos, “speaking many languages, multilingual”), alternative form of Ancient Greek πολῠ́γλωσσος (polŭ́glōssos, “speaking many languages, multilingual”), from πολῠ́ς (polŭ́s, “a lot of, many”) (ultimately from Proto-Indo-European *pleh₁- (“to fill”)) + Attic Greek γλῶττα (glôtta), Ancient Greek γλῶσσᾰ (glôssă, “tongue; language”)…

Etymology from Wiktionary, CC BY-SA 3.0