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A transparent, highly flammable liquid, C4H8O, used in synthesizing resins.

American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


(Elements & Compounds) a colourless flammable pungent liquid used in the manufacture of resins. Formula: CH3(CH2)2CHO
[C20: from butyr(ic acid) + aldehyde]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014


(ˌbyu təˈræl dəˌhaɪd)

a clear flammable liquid, C4H8O, used chiefly as an intermediate in the manufacture of resins and rubber cement.
[1885–90; butyr (ic) + aldehyde]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
References in periodicals archive ?
Six different aldehydes, which include propanal, butanal, 3-methyl butanal, 2-methyl butanal, pentanal and hexanal, were produced from the nondairy creamers analogs/mimics.
This plate was developed by Butanal: Acetic acid: DW (55: 25: 20; v/v) in a saturated twin trough chamber.
Similarly, Nacional cacao showed high amounts of butanal, ethanol, and 5-hepten-2-ol.
All nitrosamines were found in tobacco products, except for NNA (4-methylnitrosamino)-4-(3-pyridyl) butanal (45).
The major aroma-active compounds in milks were hydrogen sulfide, dimethyl sulfide, 2-butanone and furfural in DSI-UP-treated milks; diacetyl, 3-methyl butanal, dimethyl disulfide, methional and benzaldehyde in IND-UP-treated milks; and carbon disulfide, 1-octen-3-one and 1-octen-3-ol in HTST-treated milks, respectively.
In our experiments we identified hexanol, and a related odor, butanal, as strong inhibitors of CO2-sensitive neurons in Culex mosquitoes.