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(Elements & Compounds) the systematic name for formaldehyde
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
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|Noun||1.||methanal - a colorless poisonous gas; made by the oxidation of methanol|
aldehyde - any of a class of highly reactive chemical compounds; used in making resins and dyes and organic acids
gas - a fluid in the gaseous state having neither independent shape nor volume and being able to expand indefinitely
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