We found 18 dictionaries that define the word apastron:

General (12 matching dictionaries)

1. apastron: Merriam-Webster
2. apastron: Wordnik
3. apastron: Wiktionary
4. apastron: Infoplease Dictionary
5. apastron: Dictionary.com
6. Apastron: Wikipedia, the Free Encyclopedia
7. Apastron: Online Plain Text English Dictionary
8. apastron: Webster's Revised Unabridged, 1913 Edition
9. Apastron: AllWords.com Multi-Lingual Dictionary
10. apastron: FreeDictionary.org
11. apastron: TheFreeDictionary.com
12. apastron: Merriam-Webster

Computing (1 matching dictionary)

13. apastron: Encyclopedia

Medicine (1 matching dictionary)

14. online medical dictionary (No longer online)

Science (3 matching dictionaries)

15. Imagine the Universe! Dictionary (No longer online)
16. Apastron: Extragalactic Astronomy
17. APASTRON: Zoom Astronomy Glossary

Tech (1 matching dictionary)

18. High-Energy Astrophysics (No longer online)

Definitions from Wiktionary (apastron) ▸ noun:  (astronomy) The point of greatest separation between a celestial object and the star which it orbits. Similar: apoastron, periastron, apocynthion, apogee, apoapsis, apsis, apocenter, apobaryon, periapsis, apex, more... Opposite: periastron, closest approach ▸ Words similar to apastron ▸ Usage examples for apastron ▸ Idioms related to apastron ▸ Wikipedia articles (New!) ▸ Popular adjectives describing apastron ▸ Words that often appear near apastron ▸ Rhymes of apastron ▸ Invented words related to apastron