sonorant Syllabification: (so·no·rant)Pronunciation: /ˈsänərənt/Definition of sonorant noun Phonetics a sound produced with the vocal cords so positioned that spontaneous voicing is possible; a vowel, a glide, or a liquid or nasal consonant. Origin: 1930s: from sonorous + -antsonorant in other Oxford dictionaries Definition of sonorant in the British & World English dictionary