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infrasonic

[ in-fruh-son-ik ]
/ ˌɪn frəˈsɒn ɪk /

adjective

noting or pertaining to a sound wave with a frequency below the audio-frequency range.

Nearby words

  1. infrared microscope,
  2. infrared photography,
  3. infrared radiation,
  4. infrared star,
  5. infrared telescope,
  6. infrasonics,
  7. infrasound,
  8. infraspecific,
  9. infraspinatus bursa,
  10. infrastructure

Origin of infrasonic

First recorded in 1925–30; infra- + sonic
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Word Origin and History for infrasonic

infrasonic

adj.

1927, from infra- + sonic.

Online Etymology Dictionary, © 2010 Douglas Harper

Medicine definitions for infrasonic

infrasonic

[ ĭn′frə-sŏn′ĭk ]

adj.

Generating or using waves or vibrations with frequencies below that of audible sound.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

Science definitions for infrasonic

infrasound

[ ĭn′frə-sound′ ]

Sound whose wave frequency is too low (under 15-20 hertz) to be heard by humans. Some animals, such as elephants and whales, emit calls at infrasound frequencies. See Note at ultrasound.
Related formsinfrasonic adjective
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.