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Vinony

infrasound

noun

  1. vibrations with frequencies lower than 20 hertz
L227619 on Wikidata ↗

Wiktionary

noun

Etymology: Etymology tree Latin īnfrābor. English infra- English sound English infrasound From infra- + sound.

  1. Sound waves having a frequency below the human audible range (below about 20 Hz).

    “Elcor speech is ponderous and monotone. Among themselves, scent, slight movements, and subvocalized infrasound convey shades of meaning that make a human smile seem as subtle as a fireworks display. Since their subtlety can lead to misunderstandings with other species, the elcor often go out of their way to clarify when they are being sarcastic, amused, or angry.”