chordotonal Syllabification: (chor·do·to·nal)Pronunciation: /ˌkôrdəˈtōnl/Definition of chordotonal adjective Entomology (in insects) denoting sense organs that are responsive to mechanical and sound vibrations. Origin: late 19th century: from chord2 + tonalchordotonal in other Oxford dictionaries Definition of chordotonal in the British & World English dictionary