Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
quaternate is an adjective meaning "consisting of or especially arranged in sets of four". It carries one recorded sense.
consisting of or especially arranged in sets of four
“quaternate leaves”
“a quaternary compound”
Definitions, synonyms and semantic relations for quaternate come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.