Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
collinear is an adjective meaning "lying on the same line". It carries one recorded sense.
lying on the same line
Definitions, synonyms and semantic relations for collinear come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.