单词	pyrocatechol
释义	pyrocatechol noun py·​ro·​cat·​e·​chol ˌpī-rō-ˈka-tə-ˌkȯl  -ˌkōl : catechol sense 2 Word History Etymology International Scientific Vocabulary First Known Use 1881, in the meaning defined above Medical Definition pyrocatechol noun py·​ro·​cat·​e·​chol ˌpī-rō-ˈkat-ə-ˌkȯl  -ˌkōl  : a crystalline phenol C6H6O2 obtained by pyrolysis of various natural substances (as resins and lignins) but usually made synthetically and used especially as a photographic developer and in organic synthesis called also catechol
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