We found 20 dictionaries that define the word root mean square:

General (10 matching dictionaries)

1. root-mean-square: Merriam-Webster
2. root mean square: Oxford Learner's Dictionaries
3. root mean square: American Heritage Dictionary of the English Language
4. root mean square: Collins English Dictionary
5. root mean square: Wiktionary
6. root mean square: The Wordsmyth English Dictionary-Thesaurus
7. root mean square: Infoplease Dictionary
8. root mean square: Dictionary.com
9. Root Mean Square, Root-mean-square, Root mean square: Wikipedia, the Free Encyclopedia
10. root mean square: TheFreeDictionary.com

Business (1 matching dictionary)

11. BusinessDictionary.com (No longer online)

Computing (1 matching dictionary)

12. Root-mean-square, root mean square: Encyclopedia

Science (4 matching dictionaries)

13. Root-Mean-Square: Eric Weisstein's World of Mathematics
14. Root Mean Square: Extragalactic Astronomy
15. root-mean-square, root-mean-square, root mean square, root mean square: PlanetMath Encyclopedia
16. How Many? A Dictionary of Units of Measurement (No longer online)

Tech (4 matching dictionaries)

17. ROOT-MEAN-SQUARE: NOISE CONTROL TERMS
18. Dictionary for Avionics (No longer online)
19. Rane Professional Audio Reference (No longer online)
20. Sweetwater Music (No longer online)

Definitions from Wiktionary (root mean square) ▸ noun:  (mathematics, often attributive) The square root of the arithmetic mean of the squares of a set of numbers or values. Similar: mean square, square root, sqrt, quadratic mean, principal square root, geometric mean, average, radicand, mean, arithmetic mean, more... Phrases: root mean square deviation, root mean square (rms), root mean square current, root mean square error, root mean square velocity, more... ▸ Words similar to root mean square ▸ Usage examples for root mean square ▸ Idioms related to root mean square ▸ Wikipedia articles (New!) ▸ Words that often appear near root mean square ▸ Rhymes of root mean square ▸ Invented words related to root mean square