We found 29 dictionaries that define the word meteoroid:

General (20 matching dictionaries)

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

Computing (1 matching dictionary)

21. meteoroid: Encyclopedia

Medicine (1 matching dictionary)

22. online medical dictionary (No longer online)

Miscellaneous (1 matching dictionary)

23. meteoroid: Wordcraft Dictionary

Science (4 matching dictionaries)

24. meteoroid: LITTLE EXPLORERS(TM) Picture Dictionary
25. Meteoroid: Glossary on Meteor Astronomy
26. Meteoroid: Extragalactic Astronomy
27. meteoroid: Nine Planets Glossary

Slang (1 matching dictionary)

28. meteoroid: Urban Dictionary

Tech (1 matching dictionary)

29. Basics of Space Flight Glossary (No longer online)

(Note: See meteoroidal as well.)

Definitions from Wiktionary (meteoroid) ▸ noun:  (astronomy) A relatively small (sand- to boulder-sized) fragment of debris in a star system that produces a meteor when it hits the atmosphere Similar: micrometeoroid, microplanetoid, micrometeor, micrometeorite, meteor shower, Microscopid, minimoon, cometesimal, megacryometeor, microflare, more... Types: comet, asteroid, meteor, meteorite, more... Adjectives: large, small, human, big, original, solid, typical, incoming, sized, geminid, individual ▸ Word origin ▸ Words similar to meteoroid ▸ Usage examples for meteoroid ▸ Idioms related to meteoroid ▸ Wikipedia articles (New!) ▸ Popular adjectives describing meteoroid ▸ Words that often appear near meteoroid ▸ Rhymes of meteoroid ▸ Invented words related to meteoroid