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