We found 36 dictionaries that define the word perihelion:

General (20 matching dictionaries)

1. perihelion: Merriam-Webster
2. perihelion: Oxford Learner's Dictionaries
3. perihelion: American Heritage Dictionary of the English Language
4. perihelion: Collins English Dictionary
5. perihelion: Vocabulary.com
6. Perihelion, perihelion: Wordnik
7. perihelion: Wiktionary
8. perihelion: Webster's New World College Dictionary, 4th Ed.
9. perihelion: The Wordsmyth English Dictionary-Thesaurus
10. perihelion: Infoplease Dictionary
11. perihelion: Dictionary.com
12. perihelion: Online Etymology Dictionary
13. Perihelion: Wikipedia, the Free Encyclopedia
14. Perihelion: Online Plain Text English Dictionary
15. perihelion: Rhymezone
16. Perihelion: AllWords.com Multi-Lingual Dictionary
17. perihelion: Webster's 1828 Dictionary
18. perihelion: FreeDictionary.org
19. perihelion: Mnemonic Dictionary
20. perihelion: TheFreeDictionary.com

Computing (1 matching dictionary)

21. perihelion: Encyclopedia

Miscellaneous (1 matching dictionary)

22. perihelion: A Word A Day

Science (7 matching dictionaries)

23. From Stargazers to Starships Glossary (No longer online)
24. Perihelion: Eric Weisstein's World of Astronomy
25. Imagine the Universe! Dictionary (No longer online)
26. Mars Glossary (No longer online)
27. Perihelion: Extragalactic Astronomy
28. perihelion: Nine Planets Glossary
29. PERIHELION: Zoom Astronomy Glossary

Slang (1 matching dictionary)

30. perihelion: Urban Dictionary

Tech (6 matching dictionaries)

31. High-Energy Astrophysics (No longer online)
32. Basics of Space Flight Glossary (No longer online)
33. Glossary of Meteorology (No longer online)
34. JPL Terms (No longer online)
35. National Weather Service Glossary (No longer online)
36. SOLAR-TERRESTRIAL TERMS (No longer online)

(Note: See perihelia as well.)

Definitions from Wiktionary (perihelion) ▸ noun:  (astronomy) The point in the elliptical orbit of a comet, planet, etc., where it is nearest to the Sun. ▸ noun:  (figurative) The highest point or state; the peak, zenith. Similar: aphelion, perihelium, pericenter, perigee, periherm, apsis, pericynthion, peribothron, peribaryon, periareion, more... Opposite: aphelion, apastron Types: aphelion, periapsis, apoapsis, nodes, more... Phrases: perihelion distance, perihelion precession, more... Adjectives: near, pre, post, next, anomalous, last, small, past, glorious, very, compare ▸ Word origin ▸ Words similar to perihelion ▸ Usage examples for perihelion ▸ Idioms related to perihelion ▸ Wikipedia articles (New!) ▸ Popular adjectives describing perihelion ▸ Words that often appear near perihelion ▸ Rhymes of perihelion ▸ Invented words related to perihelion