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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.
lepidopteran is a noun meaning "insect that in the adult state has four wings more or less covered with tiny scales". It carries one recorded sense.
insect that in the adult state has four wings more or less covered with tiny scales
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 lepidopteran come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.