those which are capable of prolonged enunciation (opposed to explosive).

A consonant of which the sound can be continued or prolonged, as opposed to a stop or check, in which the sound is produced by the explosion of a…

A consonant which admits of a continued emission of some amount of breath, so that the sound is capable of being prolonged.

Phonetics. Of an airflow: flowing outwards from the vocal tract. Later, of a speech sound: produced with this type of airflow. Cf. ingressive, adj. c.