Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
biodegrade is a verb meaning "break down naturally through the action of biological agents". It carries one recorded sense.
break down naturally through the action of biological agents
“Plastic bottles do not biodegrade”
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 biodegrade come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.