What is the meaning of Apastron?

(n.) That point in the orbit of a double star where the smaller star is farthest from its primary.
Webster's Revised Unabridged Dictionary
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APAWebster's. (2011). apastron. Retrieved September 24, 2026, from http://smartdefine.org/apastron/definitions/1974754
ChicagoWebster's. 2011. "apastron" http://smartdefine.org/apastron/definitions/1974754 (accessed September 24, 2026).
HarvardWebster's 2011, apastron, Smart Define, viewed 24 September, 2026, <http://smartdefine.org/apastron/definitions/1974754>.
MLAWebster's. "apastron" 27 May 2011. Web. 24 September 2026. <http://smartdefine.org/apastron/definitions/1974754>