English dictionary



Hint: In most browsers you can lookup any word by double click it.

English adjective: infrasonic

1. infrasonic having frequencies below those of audible sound


Similarinaudible, unhearable


Antonymsaudible, hearable









Based on WordNet 3.0 copyright © Princeton University.
Web design: Orcapia v/Per Bang. English edition: .
2025 onlineordbog.dk