Pertaining to or having sound; sounding.In pron., noting certain alphabetic sounds, as the vowels, semivowels, nasals, and voiced mutes and fricatives, the utterance of which includes the element of tone, or a vibration of the vocal chords, as a, l, n, b, z, v (the last three as opposed to p, s, f, which are similar utterances without tone); voiced, vocal, intonated (soft and flat are also sometimes used in the same sense).In entomology, same as sonorific, 2.n. In pron., a sonant letter.