We found 13 dictionaries that define the word participants:

General (9 matching dictionaries)

1. participants: Merriam-Webster
2. participants: Collins English Dictionary
3. participants: Vocabulary.com
4. Participant's, Participants, participant's, participants: Wordnik
5. participants: Cambridge Advanced Learner's Dictionary
6. participants: Wiktionary
7. participants: Dictionary.com
8. participants: Cambridge Essential American English Dictionary
9. Participants: TheFreeDictionary.com

Art (1 matching dictionary)

10. Literary Criticism (No longer online)

Business (2 matching dictionaries)

11. Participants: Legal dictionary
12. Participants: Financial dictionary

Medicine (1 matching dictionary)

13. Participants: Medical dictionary

(Note: See participant as well.)

Definitions from Wiktionary (participant) ▸ noun:  One who participates. ▸ adjective:  Sharing; participating; having a share of part. ▸ Also see participant Opposite: spectators, observers, onlookers, bystanders, nonparticipants Phrases: plan participants, Participants in the Madoff investment scandal, Participants in Operation Enduring Freedom, Financial market participants, participants in an event, more... Adjectives: other, active, many, potential, individual, several, various, non, major, key, female ▸ Words similar to participants ▸ Usage examples for participants ▸ Idioms related to participants ▸ Wikipedia articles (New!) ▸ Popular adjectives describing participants ▸ Popular nouns described by participants ▸ Words that often appear near participants ▸ Rhymes of participants ▸ Invented words related to participants