Definitions

from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. See catechin.
  • n. A biologically important organic phenol, having two hydroxyl groups attached to the benzene ring.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. The biologically important diphenol ortho-dihydroxy benzene; isomeric with hydroquinone and resorcinol.

from the GNU version of the Collaborative International Dictionary of English

  • n. any of a group of chemicals having a benzene ring substituted with two hydroxyl groups in ortho position, especially ortho-dihydroxybenzene itself (C6H6O2), also called pyrocatechol, used in photography and as a reagent.

from The Century Dictionary and Cyclopedia

  • n. Same as pyrocatechol or *pyrocatechin.

Etymologies

catech(u) + -ol1.
(American Heritage® Dictionary of the English Language, Fourth Edition)

Examples

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