(Phonetics) Uttered, as an element of speech, with tone or proper vocal sound, as distinguished from mere breath sound; intonated; voiced; vocal; tonic; the opposite of nonvocal, or surd; said of the vowels, semivowels, liquids, and nasals, and particularly of the consonants b, d, g hard, v, etc., as compared with their cognates p, t, k, f, etc., which are called nonvocal, surd, or aspirate.
... even, plane, smooth; prostrate, prone; stale, insipid, vapid, tasteless, unsavory, unpalatable, mawkish; peremptory, unqualified, positive; spatulous, spatulate; sonant, vocal. Antonyms: convex, concave, ... — Putnam's Word Book • Louis A. Flemming
... such an analysis was very hard to make, as the sequel shows. Nor is the utility of such an analysis self-evident, as the experience of the Egyptians proved. The vowel sound is so intimately linked with the consonant—the con-sonant, implying this intimate relation in its very name—that it seemed extremely difficult to give it individual recognition. To set off the mere labial beginning of the sound by itself, and to recognize it as an all-essential element of phonation, was the feat at which human intelligence so long balked. ... — A History of Science, Volume 1(of 5) • Henry Smith Williams