We found 19 dictionaries that define the word reinforcer:

General (13 matching dictionaries)

1. reinforcer: Merriam-Webster
2. reinforcer: Oxford Learner's Dictionaries
3. reinforcer: American Heritage Dictionary of the English Language
4. reinforcer: Collins English Dictionary
5. reinforcer: Vocabulary.com
6. reinforcer: Wordnik
7. reinforcer: Wiktionary
8. reinforcer: Dictionary.com
9. Reinforcer: Wikipedia, the Free Encyclopedia
10. reinforcer: Rhymezone
11. reinforcer: FreeDictionary.org
12. reinforcer: Mnemonic Dictionary
13. reinforcer: TheFreeDictionary.com

Business (1 matching dictionary)

14. reinforcer: Legal dictionary

Computing (1 matching dictionary)

15. reinforcer: Encyclopedia

Medicine (3 matching dictionaries)

16. reinforcer: Merriam-Webster Medical Dictionary
17. online medical dictionary (No longer online)
18. reinforcer: Medical dictionary

Slang (1 matching dictionary)

19. reinforcer: Urban Dictionary

(Note: See reinforcers as well.)

Definitions from Wiktionary (reinforcer) ▸ noun:  Something that reinforces; something that strengthens a behavior. Similar: reinforcement, reinforcing stimulus, reinforcing, reënforcement, reenforcement, afforcement, positive reinforcement, strengthening, bolstering, rein, more... Opposite: punisher, aversive stimulus, deterrent Types: positive reinforcer, negative reinforcer, punishment, extinction, more... Phrases: positive reinforcer, negative reinforcer, conditioned reinforcer, more... Adjectives: positive, negative, conditioned, primary, secondary, powerful, effective, social, generalized, potent, strong Colors:     blue,     green,     red,     yellow,     orange, more... ▸ Words similar to reinforcer ▸ Usage examples for reinforcer ▸ Idioms related to reinforcer ▸ Wikipedia articles (New!) ▸ Popular adjectives describing reinforcer ▸ Words that often appear near reinforcer ▸ Rhymes of reinforcer ▸ Invented words related to reinforcer