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.

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1887.  Ellis, Speech-sounds, in Encycl. Brit., XXII. 382. [The sounds produced by expelling air] are either flated … or voiced … or else whispered.

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