noun Chemistry.
a clear, colorless, flammable liquid, C 4 H 8 O, used chiefly as an intermediate in the manufacture of resins and rubber cement.
Also called butyl aldehyde.

1885–90; butyr(ic) + aldehyde

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World English Dictionary
butyraldehyde (ˌbjuːtɪˈrældɪˌhaɪd)
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 & Unabridged 10th Edition
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American Heritage
Science Dictionary
butyraldehyde   (by'tə-rāl'də-hīd')  Pronunciation Key 
A transparent, highly flammable liquid used in making resins. Chemical formula: C4H8O.
The American Heritage® Science Dictionary
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Example sentences
Comparative toxic action of crotonaldehyde and butyraldehyde.
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