noun
: the motion of the sun and solar system with reference to stars in the sun's neighborhood ; also : any of the sun's other motions as a member of the galaxy — compare solar apex
noun
: the motion of the sun and solar system with reference to stars in the sun's neighborhood ; also : any of the sun's other motions as a member of the galaxy — compare solar apex
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012