Found 1 items, similar to Periastron.
English → English (gcide) Definition: Periastron Periastron \Per`i*as"tron\, n. [NL., fr. Gr. ? about + ? a star.] (Astron.) That point, in the real or apparent orbit of one star revolving around another, at which the former is nearest to the latter. [1913 Webster]