Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
pyrene is a noun meaning "a pale yellow crystalline hydrocarbon C16H10 extracted from coal tar". It carries 2 recorded senses.
a pale yellow crystalline hydrocarbon C16H10 extracted from coal tar
the small hard nutlet of a drupe or drupelet; the seed and the hard endocarp that surrounds it
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 pyrene come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.