We found 31 dictionaries that define the word rheostat:

General (22 matching dictionaries)

1. rheostat: Merriam-Webster
2. rheostat: Oxford Learner's Dictionaries
3. rheostat: American Heritage Dictionary of the English Language
4. rheostat: Collins English Dictionary
5. rheostat: Vocabulary.com
6. rheostat: Wordnik
7. rheostat: Cambridge Advanced Learner's Dictionary
8. rheostat: Wiktionary
9. rheostat: Webster's New World College Dictionary, 4th Ed.
10. rheostat: The Wordsmyth English Dictionary-Thesaurus
11. rheostat: Infoplease Dictionary
12. rheostat: Dictionary.com
13. rheostat: Online Etymology Dictionary
14. Rheostat: Wikipedia, the Free Encyclopedia
15. Rheostat: Online Plain Text English Dictionary
16. rheostat: Webster's Revised Unabridged, 1913 Edition
17. rheostat: Rhymezone
18. Rheostat: AllWords.com Multi-Lingual Dictionary
19. rheostat: FreeDictionary.org
20. rheostat: The Phrontistery - A Dictionary of Obscure Words
21. rheostat: Mnemonic Dictionary
22. rheostat: TheFreeDictionary.com

Business (1 matching dictionary)

23. Construction Term Glossary (No longer online)

Computing (1 matching dictionary)

24. rheostat: Encyclopedia

Medicine (4 matching dictionaries)

25. rheostat: Merriam-Webster Medical Dictionary
26. Dorland's Illustrated Medical Dictionary (No longer online)
27. online medical dictionary (No longer online)
28. rheostat: Medical dictionary

Miscellaneous (1 matching dictionary)

29. Encyclopedia of Graphic Symbols (No longer online)

Tech (2 matching dictionaries)

30. rheostat: Electronics
31. AUTOMOTIVE TERMS (No longer online)

(Note: See rheostatic as well.)

Definitions from Wiktionary (rheostat) ▸ noun:  An electrical resistor, with two terminals, whose resistance is continuously variable by moving a knob or slider. Similar: variable resistor, reostat, rheocrat, rheotrope, rheotome, rheochord, rheometer, rheotan, thermoresistor, rheocord, more... Opposite: fixed resistor, constant resistor Phrases: field rheostat, liquid rheostat, rheostat pedal, water rheostat, more... Adjectives: variable, adjustable, suitable, ohm, liquid, small, wire, simple, operated, external, current ▸ Word origin ▸ Words similar to rheostat ▸ Usage examples for rheostat ▸ Idioms related to rheostat ▸ Wikipedia articles (New!) ▸ Popular adjectives describing rheostat ▸ Words that often appear near rheostat ▸ Rhymes of rheostat ▸ Invented words related to rheostat