Definition of phono:
(n) :
(linguistics, informal) Clipping of phonology. [(uncountable) The study of the way sounds function in languages, including accent, intonation, phonemes, stress, and syllable structure, and which sounds are distinctive units within a language; (countable) the way sounds function within a given language; a phonological system.]
(n) :
Clipping of phonograph. [A device that captures sound waves onto an engraved archive; a lathe.]