Wiktionary
infrasonics
n. The study, and the application of infrasound.
Usage examples of "infrasonics".
And the humans could feel infrasonics seeming to go right through them.
Down below, the gawklegs had begun a peculiar droning, like two-ton Buddhist monks inside an echo chamber, and the infrasonics had gotten intense, an impossibly deep pipe-organ concert.
Gawklegs were on the move in the distance, their infrasonics apparently silent.