In phonetics and phonology, a sonorant is a speech sound that is produced without turbulent airflow in the vocal tract.
Sonorants are those articulations in which there is only a partial closure or an unimpeded oral or nasal scape of air; such articulations, typically voiced, and frequently frictionless, without noise component, may share many phonetic characteristics with vowels.
In this case, the word sonorant may be restricted to non-vocoid resonants; that is, all of the above except vowels and semivowels.