We found 28 dictionaries that define the word calla:

General (19 matching dictionaries)

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

Art (1 matching dictionary)

20. Glossary of Stamp Collecting Terms (No longer online)

Computing (1 matching dictionary)

21. calla: Encyclopedia

Medicine (3 matching dictionaries)

22. CALLA: MedTerms.com Medical Dictionary
23. Calla: Medical dictionary
24. CALLA: Drug Medical Dictionary

Miscellaneous (1 matching dictionary)

25. CALLA: Acronym Finder

Science (2 matching dictionaries)

26. Garden Flower, Shrub and Tree Glossary (No longer online)
27. CALLA: Cytokines & Cells Online Pathfinder Encyclopaedia

Slang (1 matching dictionary)

28. calla: Urban Dictionary

(Note: See callas as well.)

Definitions from Wiktionary (calla) ▸ noun:  A marsh plant native to cooler areas throughout the northern hemisphere, Calla palustris, having pale green flowers in a white spathe. ▸ noun:  A calla lily (Zantedeschia aethiopica). Similar: arum lily, calla lily, genus calla, Zantedeschia aethiopica, caltha, provenzalia, water-arum, calliandra, marsh marigold, calliopsis, more... Opposite: dethroned, deposed, ousted, removed Types: green goddess, pink mist, sweetheart, stargazer, purple passion, red alert, more... Phrases: calla lilies, calla lily, wild calla, calla palustris, black calla, more... Adjectives: wild, white, common, anti, black, yellow, noble, beautiful, coronary, golden, fragrant Colors:     white,     green,     yellow,     pink,     purple, more... ▸ Words similar to calla ▸ Usage examples for calla ▸ Idioms related to calla ▸ Wikipedia articles (New!) ▸ Popular adjectives describing calla ▸ Words that often appear near calla ▸ Rhymes of calla ▸ Invented words related to calla