We found 23 dictionaries that define the word reaction time:

General (13 matching dictionaries)

1. reaction time: American Heritage Dictionary of the English Language
2. reaction time: Collins English Dictionary
3. reaction time: Vocabulary.com
4. reaction-time, reaction time: Wordnik
5. reaction time: Wiktionary
6. reaction time: The Wordsmyth English Dictionary-Thesaurus
7. reaction time: Infoplease Dictionary
8. reaction time: Dictionary.com
9. Reaction Time, Reaction time: Wikipedia, the Free Encyclopedia
10. reaction time: Rhymezone
11. reaction time: FreeDictionary.org
12. reaction time: Mnemonic Dictionary
13. reaction time: TheFreeDictionary.com

Business (2 matching dictionaries)

14. reaction time: Legal dictionary
15. reaction time: Financial dictionary

Computing (1 matching dictionary)

16. reaction time: Encyclopedia

Medicine (5 matching dictionaries)

17. reaction time: Merriam-Webster Medical Dictionary
18. Dorland's Illustrated Medical Dictionary (No longer online)
19. Medical Dictionary (No longer online)
20. online medical dictionary (No longer online)
21. reaction time: Medical dictionary

Tech (2 matching dictionaries)

22. AUTOMOTIVE TERMS (No longer online)
23. DOD Dictionary of Military Terms (No longer online)

(Note: See reaction_times as well.)

Definitions from Wiktionary (reaction time) ▸ noun:  The interval between the reception of a stimulus and the initiation of a response. Similar: latency, response time, latent period, foreperiod, psychological refractory period, real time, time lag, lagtime, meanwhile, waiting period, more... Opposite: latency, response delay, processing delay ▸ Words similar to reaction time ▸ Usage examples for reaction time ▸ Idioms related to reaction time ▸ Wikipedia articles (New!) ▸ Words that often appear near reaction time ▸ Rhymes of reaction time ▸ Invented words related to reaction time