Euphonon :: Euphonon (n.) An instrument resembling the organ in tine and the upright piano in form. It is characterized by great strength and sweetness of tone.
Isochronon :: Isochronon (n.) A clock that is designed to keep very accurate time.
Nonone :: Nonone (n.) Any one of several metameric unsaturated hydrocarbons (C9H14) of the valylene series.
Onondagas :: Onondagas (n. pl.) A tribe of Indians formerly inhabiting what is now a part of the State of New York. They were the central or head tribe of the Five Nations.
Prononce :: Prononce (a.) Strongly marked; decided, as in manners, etc..