We found 23 dictionaries that define the word experimenter:

General (17 matching dictionaries)

1. experimenter: Merriam-Webster
2. experimenter: Oxford Learner's Dictionaries
3. experimenter: Collins English Dictionary
4. experimenter: Vocabulary.com
5. Experimenter, experimenter: Wordnik
6. experimenter: Cambridge Advanced Learner's Dictionary
7. experimenter: Wiktionary
8. Experimenter, experimenter: Dictionary.com
9. Experimenter (film), Experimenter: Wikipedia, the Free Encyclopedia
10. Experimenter: Online Plain Text English Dictionary
11. experimenter: Webster's Revised Unabridged, 1913 Edition
12. experimenter: Rhymezone
13. Experimenter: AllWords.com Multi-Lingual Dictionary
14. experimenter: Webster's 1828 Dictionary
15. experimenter: FreeDictionary.org
16. experimenter: Mnemonic Dictionary
17. experimenter: TheFreeDictionary.com

Business (1 matching dictionary)

18. experimenter: Legal dictionary

Computing (1 matching dictionary)

19. experimenter: Encyclopedia

Medicine (2 matching dictionaries)

20. experimenter: Merriam-Webster Medical Dictionary
21. experimenter: Medical dictionary

Miscellaneous (2 matching dictionaries)

22. Experimenter: Glossary of Terms in Parapsychology
23. experimenter: Idioms

(Note: See experiment as well.)

Definitions from Wiktionary (experimenter) ▸ noun:  A person who experiments. Similar: experimentator, experimentist, experimentee, experimentalist, experient, essayer, experiencer, experimentarian, expeditioner, examiner, more... Opposite: control group, subject, participant, observer Types: scientist, psychologist, sociologist, anthropologist, biologist, more... Phrases: experimenter bias, experimenter effects, experimenter effect, experimenter e's, experimenter es, more... Adjectives: second, female, first, same, great, male, early, careful, human, scientific, young Colors:     silver,     white,     black,     gray,     blue, more... ▸ Words similar to experimenter ▸ Usage examples for experimenter ▸ Idioms related to experimenter ▸ Wikipedia articles (New!) ▸ Popular adjectives describing experimenter ▸ Words that often appear near experimenter ▸ Rhymes of experimenter ▸ Invented words related to experimenter