We found 5 dictionaries that define the word ephemerids:

General (5 matching dictionaries)

1. ephemerids: Merriam-Webster
2. ephemerids: Collins English Dictionary
3. ephemerids: Vocabulary.com
4. ephemerids: Wiktionary
5. ephemerids: Dictionary.com

(Note: See ephemerid as well.)

Definitions from Wiktionary (ephemerid) ▸ noun:  Any mayfly in the family Ephemeridae. ▸ Also see ephemerid ▸ Words similar to ephemerids ▸ Usage examples for ephemerids ▸ Idioms related to ephemerids ▸ Wikipedia articles (New!) ▸ Popular adjectives describing ephemerids ▸ Words that often appear near ephemerids ▸ Rhymes of ephemerids ▸ Invented words related to ephemerids