phono- BrE AmE prefix /fəʊnəʊ, -nə, fɒnə $ foʊnoʊ, -nə, fɑːnə/ ( also phon- ) technical
[ Language: Latin ; Origin: Greek , from phone 'sound, voice' ]
1 . relating to the voice or speech:
phonetics (=the science of speech sounds)
2 . relating to sound:
a phonoreceptor (=a hearing organ)