infrasonic

[in-fruh-son-ik]

in·fra·son·ic

[in-fruh-son-ik]
adjective
noting or pertaining to a sound wave with a frequency below the audio-frequency range.

Origin:
1925–30; infra- + sonic
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2012.
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Infrasonic is always a great word to know.
So is slumgullion. Does it mean:
a stew of meat, vegetables, potatoes, etc.
a scrap or morsel of food left at a meal.
Collins
World English Dictionary
infrasound (ˈɪnfrəˌsaʊnd)
 
n
soundlike waves having a frequency below the audible range, that is, below about 16Hz
 
infrasonic
 
adj

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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American Heritage
Medical Dictionary

infrasonic in·fra·son·ic (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.
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American Heritage
Science Dictionary
infrasound   (ĭn'frə-sound')  Pronunciation Key 
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.

infrasonic adjective
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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