We found 16 dictionaries that define the word infrasound:

General (9 matching dictionaries)

1. infrasound: Oxford Learner's Dictionaries
2. infrasound: American Heritage Dictionary of the English Language
3. infrasound: Collins English Dictionary
4. Infrasound, infrasound: Wordnik
5. infrasound: Wiktionary
6. infrasound: Infoplease Dictionary
7. infrasound: Dictionary.com
8. Infrasound: Wikipedia, the Free Encyclopedia
9. infrasound: TheFreeDictionary.com

Computing (2 matching dictionaries)

10. infrasound: Computer Telephony & Electronics Dictionary and Glossary
11. infrasound: Encyclopedia

Medicine (2 matching dictionaries)

12. infrasound: Merriam-Webster Medical Dictionary
13. infrasound: Medical dictionary

Miscellaneous (1 matching dictionary)

14. infrasound: The Skeptic's Dictionary

Tech (2 matching dictionaries)

15. Glossary of Meteorology (No longer online)
16. Space and Electronic Warfare Lexicon (No longer online)

Definitions from Wiktionary (infrasound) ▸ noun:  (physics) Sound waves having a frequency below the human audible range (below about 20 Hz). Similar: ultrasound, hypersound, fundamental, extremely low frequency, infrared, infrared radiation, voiceband, near infrared, shortwave, infrayellow, more... Opposite: ultrasound, supersonic, high-frequency ▸ Words similar to infrasound ▸ Usage examples for infrasound ▸ Idioms related to infrasound ▸ Wikipedia articles (New!) ▸ Popular adjectives describing infrasound ▸ Words that often appear near infrasound ▸ Rhymes of infrasound ▸ Invented words related to infrasound