We found 38 dictionaries that define the word aster:

General (25 matching dictionaries)

1. -aster, aster: Merriam-Webster.com
2. Aster, -aster, aster: Oxford Learner's Dictionaries
3. aster: American Heritage Dictionary of the English Language
4. -aster, aster: Collins English Dictionary
5. aster: Vocabulary.com
6. Aster, aster: Wordnik
7. -aster, aster: Wiktionary
8. -aster, aster: Webster's New World College Dictionary, 4th Ed.
9. -aster, aster: The Wordsmyth English Dictionary-Thesaurus
10. aster: Infoplease Dictionary
11. -aster, aster: Dictionary.com
12. -aster, aster: Online Etymology Dictionary
13. ASTER (spacecraft), ASTER, Aster (auto parts company), Aster (automobile), Aster (cell biology), Aster (genus), Aster (missile family), Aster (typeface), Aster (venture capital company), Aster: Wikipedia, the Free Encyclopedia
14. Aster: Online Plain Text English Dictionary
15. aster: Webster's Revised Unabridged, 1913 Edition
16. aster: Rhymezone
17. Aster: AllWords.com Multi-Lingual Dictionary
18. aster: Webster's 1828 Dictionary
19. ASTER: Stammtisch Beau Fleuve Acronyms
20. aster: Free Dictionary
21. aster: Mnemonic Dictionary
22. aster: LookWAYup Translating Dictionary/Thesaurus
23. aster: Dictionary/thesaurus

Art (1 matching dictionary)

24. -aster, aster-: A Cross Reference of Latin and Greek Elements

Computing (1 matching dictionary)

25. Aster (genus), aster: Encyclopedia

Medicine (3 matching dictionaries)

26. Dorland's Illustrated Medical Dictionary (No longer online)
27. online medical dictionary (No longer online)
28. Aster, -aster: Medical dictionary

Miscellaneous (2 matching dictionaries)

29. ASTER: Acronym Finder
30. AbbreviationZ (No longer online)

Science (4 matching dictionaries)

31. aster: Dictionary of Botanical Epithets
32. Aster, Aster, Aster, Aster, Aster: Botanical Name listing of Plants
33. On-Line Biology Book: GLOSSARY (No longer online)
34. ASTER: A Dictionary of Quaternary Acronyms and Abbreviations

Slang (1 matching dictionary)

35. Aster: Urban Dictionary

Tech (1 matching dictionary)

36. ASTER: GEOGRAPHIC INFORMATION SYSTEMS, CARTOGRAPHY, AND REMOTE SENSING

(Note: See astering as well.)

Definitions from Wiktionary ( ) ▸ noun:  Any of several plants of the genus Aster; one of its flowers. ▸ noun:  (biology) A star-shaped structure formed during the mitosis of a cell. ▸ noun:  (obsolete) A star. Similar: asterwort, astrantia, astelia, starthistle, spirea, anthericum, starflower, Michaelmas daisy, daisy, composite flower, more... Opposite: venter Types: daffodil, poppy, daisy, chrysanthemum, sunflower, lily, tulip, more... Phrases: Aster yellows, China aster, aster family, sperm aster, golden aster, more... Adjectives: yellow, wild, leaved, purple, sperm, golden, white, china, small, large, single Colors:     lavender,     purple,     pink,     white,     blue,     violet,     red,     yellow,     magenta,     mauve ▸ Word origin ▸ Words similar to aster ▸ Usage examples for aster ▸ Idioms related to aster ▸ Wikipedia articles (New!) ▸ Popular adjectives describing aster ▸ Words that often appear near aster ▸ Rhymes of aster ▸ Invented words related to aster