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