Pronunciation (US) IPA (key): /ˈmaɪ.krəˌfoʊn/ (UK) IPA (key): /ˈmaɪ.krəˌfəʊn/ Audio (UK)(file) Noun Singular microphone Plural microphones A device that converts sound into electricity; microphones send sound to be broadcast or recorded. Synonyms: mic and mike We can't hear you! Speak into the microphone! She records her songs using a microphone. Wikiwand - on Seamless Wikipedia browsing. On steroids.Remove ads