noun Chemistry.

a colorless, water-soluble liquid, C3H6O, having a pungent odor: used chiefly in the manufacture of plastics.

Nearby words

  1. prophylactic treatment,
  2. prophylaxis,
  3. propine,
  4. propinquity,
  5. propiomazine,
  6. propionate,
  7. propionibacteria,
  8. propionibacterium,
  9. propionic,
  10. propionic acid

Origin of propionaldehyde

Also called propyl aldehyde. Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019