D defs.my
Entry 2 senses · 2 variants Webster, 1913

-one

/(ōn)/ · IPA /-əʊn/
01 A suffix indicating that the substance, in the name of which it appears, is a ketone; as, acetone.
  1. 1.
    A suffix indicating that the substance, in the name of which it appears, is a ketone; as, acetone.(Chem.)
02 suff. A termination indicating that the hydrocarbon to the name of which it is affixed belongs to the fourth series of hydrocarbons, or the third…
  1. 1.
    A termination indicating that the hydrocarbon to the name of which it is affixed belongs to the fourth series of hydrocarbons, or the third series of unsaturated hydrocarbons; as, nonone.(Chem.) [archaic]