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Definition of Pyroacetic
1. a. Pertaining to, and designating, a substance (acetone) obtained by the distillation of the acetates. It is now called also pyroacetic ether, and formerly was called pyroacetic spirit.
Definition of Pyroacetic
1. Adjective. (obsolete chemistry) of or relating to acetone (once obtained by heating acetates) ¹
¹ Source: wiktionary.com