Definition of pelargone in US English:

pelargone

noun

Chemistry
  • Any of several ketones derived from pelargonic acid or obtained from oil of pelargonium; specifically a solid ketone originally obtained from the dry distillation of barium pelargonate; dioctyl ketone, heptadeca-9-one, CH₃(CH₂)₇·CO·(CH₂)₇CH₃.

Origin

Mid 19th century. From pelarg- + -one.