■ noun Astronomy the part of the apparent motion of a star due to its actual movement in space relative to the sun.
PROPER MOTION
Meaning of PROPER MOTION in English
Concise Oxford English vocab. Сжатый оксфордский словарь английского языка. 2004
■ noun Astronomy the part of the apparent motion of a star due to its actual movement in space relative to the sun.
Concise Oxford English vocab. Сжатый оксфордский словарь английского языка. 2004