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Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
autotroph is a noun meaning "plant capable of synthesizing its own food from simple organic substances". It carries one recorded sense.
plant capable of synthesizing its own food from simple organic substances
Forms marked · are formed by the regular rule rather than recorded in the source data. English keeps a few hundred irregulars and the rest follow the pattern, so the rule is right far more often than not — but it is a rule, and the mark says so.
Definitions, synonyms and semantic relations for autotroph come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.