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See more synonyms for biodegrade on Thesaurus.com
verb (used without object), bi·o·de·grad·ed, bi·o·de·grad·ing.
  1. to decay and become absorbed by the environment: toys that will biodegrade when they're discarded.
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Origin of biodegrade

First recorded in 1970–75; back formation from biodegradable
Related formsbi·o·deg·ra·da·tion [bahy-oh-deg-ruh-dey-shuh n] /ˌbaɪ oʊˌdɛg rəˈdeɪ ʃən/, noun
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018