Word: apastron
Part of speech: Noun
Syllables: ap
as
tron
Definition: The point of greatest separation between a celestial object and the star which it orbits.
Morphemes:
Affix: apastron
Language: en
PoS: Noun
Meaning: The point of greatest separation between a celestial object and the star which it orbits.
Etymology Compounds: Affix: ᾰ̓στήρ
Language: grc
Decoded: aster
Meaning: celestial body 
Affix: -ον
Language: grc
Decoded: -on
Meaning: suffix forming nominative, accusative and vocative singular nouns