We found 25 dictionaries that define the word red giant:

General (18 matching dictionaries)

1. red giant: Longman Dictionary of Contemporary English
2. red giant: Merriam-Webster
3. red giant: Oxford Learner's Dictionaries
4. red giant: American Heritage Dictionary of the English Language
5. red giant: Collins English Dictionary
6. red giant: Vocabulary.com
7. red giant: Cambridge Advanced Learner's Dictionary
8. red giant: Wiktionary
9. red giant: The Wordsmyth English Dictionary-Thesaurus
10. red giant: Infoplease Dictionary
11. red giant: Dictionary.com
12. Red-giant, Red giant: Wikipedia, the Free Encyclopedia
13. red giant: Rhymezone
14. red giant: FreeDictionary.org
15. red giant: Mnemonic Dictionary
16. red giant: TheFreeDictionary.com

Computing (1 matching dictionary)

17. Red-giant, red giant: Encyclopedia

Science (4 matching dictionaries)

18. Red Giant: Eric Weisstein's World of Astronomy
19. Imagine the Universe! Dictionary (No longer online)
20. Red Giant: Extragalactic Astronomy
21. red giant: Nine Planets Glossary

Slang (1 matching dictionary)

22. Red Giant: Urban Dictionary

Tech (1 matching dictionary)

23. High-Energy Astrophysics (No longer online)

(Note: See red_giants as well.)

Definitions from Wiktionary (red giant) ▸ noun:  (astronomy) A large red coloured star with a lower surface temperature than many stars, being at the final stage of moderately massive main-sequence stars. Similar: red dwarf, red clump, Rigel, red spiral galaxy, red spiral, HzRG, regulus, Wolf-Rayet star, radio galaxy, radiogalaxy, more... Types: Betelgeuse, Antares, Aldebaran, Arcturus, Pollux, Mira, Mu Cephei, VY Canis Majoris, more... Phrases: red giant star, Red Giant Movies, Red and white giant flying squirrel, more... Adjectives: circumbinary, giant, stellular, sane, primary, binary, circumstellar, early, sn, substellar, sm ▸ Words similar to red giant ▸ Usage examples for red giant ▸ Idioms related to red giant ▸ Wikipedia articles (New!) ▸ Words that often appear near red giant ▸ Rhymes of red giant ▸ Invented words related to red giant