We found 24 dictionaries that define the word clepsydra:

General (21 matching dictionaries)

1. clepsydra: Merriam-Webster
2. clepsydra: Oxford Learner's Dictionaries
3. clepsydra: American Heritage Dictionary of the English Language
4. clepsydra: Collins English Dictionary
5. clepsydra: Wiktionary
6. clepsydra: Webster's New World College Dictionary, 4th Ed.
7. clepsydra: The Wordsmyth English Dictionary-Thesaurus
8. clepsydra: Infoplease Dictionary
9. Clepsydra, clepsydra: Dictionary.com
10. Clepsydra (diatom), Clepsydra: Wikipedia, the Free Encyclopedia
11. Clepsydra: Online Plain Text English Dictionary
12. clepsydra: Webster's Revised Unabridged, 1913 Edition
13. clepsydra: Rhymezone
14. Clepsydra: AllWords.com Multi-Lingual Dictionary
15. clepsydra: Webster's 1828 Dictionary
16. clepsydra: FreeDictionary.org
17. clepsydra: The Phrontistery - A Dictionary of Obscure Words
18. clepsydra: Mnemonic Dictionary
19. clepsydra: TheFreeDictionary.com
20. clepsydra: Vocabulary.com
21. clepsydra: Wordnik

Computing (1 matching dictionary)

22. Clepsydra (clock), clepsydra: Encyclopedia

Miscellaneous (1 matching dictionary)

23. clepsydra: Wordcraft Dictionary

Tech (1 matching dictionary)

24. Lake and Water Word Glossary (No longer online)

(Note: See clepsydrae as well.)

Definitions from Wiktionary (clepsydra) ▸ noun:  Synonym of water clock, especially (historical) ancient Greek and Roman forms. Similar: water clock, water glass, klepsydra, klepsudra, clocke, cyclops, ceraunoscope, scytale, scyphus, lacmus, more... Types: water clock, sundial, hourglass, stopwatch, more... Adjectives: roman, first, ancient, simple, old, vast, swift, public, chinese, new, greek Colors:     blue,     turquoise,     aqua,     teal,     azure, more... ▸ Words similar to clepsydra ▸ Usage examples for clepsydra ▸ Idioms related to clepsydra ▸ Wikipedia articles (New!) ▸ Popular adjectives describing clepsydra ▸ Words that often appear near clepsydra ▸ Rhymes of clepsydra ▸ Invented words related to clepsydra