We found 10 dictionaries that define the word registrants:

General (7 matching dictionaries)

1. registrants: Merriam-Webster
2. registrants: Collins English Dictionary
3. registrants: Vocabulary.com
4. Registrant's, Registrants, registrant's, registrants: Wordnik
5. registrants: Wiktionary
6. registrants: Dictionary.com
7. registrants: TheFreeDictionary.com

Business (1 matching dictionary)

8. registrants: Merriam-Webster Legal Dictionary

Computing (1 matching dictionary)

9. registrants: Encyclopedia

Medicine (1 matching dictionary)

10. registrants: Medical dictionary

(Note: See registrant as well.)

Definitions from Wiktionary (registrant) ▸ noun:  one who registers something or is registered ▸ Also see registrant Opposite: non-registrants, unregistered, unenrolled ▸ Words similar to registrants ▸ Usage examples for registrants ▸ Idioms related to registrants ▸ Wikipedia articles (New!) ▸ Popular adjectives describing registrants ▸ Words that often appear near registrants ▸ Rhymes of registrants ▸ Invented words related to registrants