Origin of megaphonemega- + -phone
intransitive verb-·phoned·, -·phon·ing
- A funnel-shaped device used to direct and amplify the voice.
- A bullhorn.
tr. & intr.v.meg·a·phoned, meg·a·phon·ing, meg·a·phones
(third-person singular simple present megaphones, present participle megaphoning, simple past and past participle megaphoned)
- (intransitive) To use a megaphone.
Named for the root Aniba megaphylla + -one (“ketone”).