from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A colorless, flammable, poisonous liquid aldehyde, CH2CHCHO, having an acrid odor and vapors irritating to the eyes.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A pungent, acrid, poisonous liquid aldehyde, CH2=CH-CH=O, made by the destructive distillation of glycerol.
from the GNU version of the Collaborative International Dictionary of English
- n. A limpid, colorless, highly volatile liquid, obtained by the dehydration of glycerin, or the destructive distillation of neutral fats containing glycerin. Its vapors are intensely irritating.
from The Century Dictionary and Cyclopedia
- n. A colorless limpid liquid, CH2CHCOH, having a disagreeable and intensely irritating odor, such as that noticeable after the flame of a candle has been extinguished and while the wick still glows.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. a pungent colorless unsaturated liquid aldehyde made from propene
acr(id) + olein.(American Heritage® Dictionary of the English Language, Fourth Edition)