a. Phonetics. [formed as if pa. pple. of *flate v., f. FLAT-US.] Of consonant-sounds: Produced by flatus, i.e., by breath without any vibration of the vocal chords.
1887. Ellis, Speech-sounds, in Encycl. Brit., XXII. 382. [The sounds produced by expelling air] are either flated or voiced or else whispered.