high frequency highf·re·quency rare noun 1. 3 to 30 megahertz Synonymshigh frequencyHF 2. a pitch that is perceived as above other pitches Synonymshigh pitchhigh frequency Antonymslow pitch Related words Broader terms pitchradio frequency Narrower terms sopranotenor Parts electromagnetic spectrum WordNet 2.1 (Princeton University). WordNet 2.1 Copyright Princeton University. All rights reserved.
