Aldehyde
Aldehyde, any of a class of highly reactive organic chemical compounds characterized by a CHO group; especially, acetaldehyde (C2H4O). Formaldehyde (CH2O) is a pungent gaseous aldehyde used commonly as a disinfectant and preservative and in making resins and plastics.
See also: Formaldehyde.
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21st Century Webster's Family Encyclopedia21st Century Webster's Family Encyclopedia - Alabama to Anderson, Dame Judith