the mathematical operation of reversing the directions of all three space coordinates. Symbol: P.
[speys-sey-ving] /ˈspeɪsˌseɪ vɪŋ/ adjective 1. that saves space. noun 2. the act or process of saving space.
noun 1. any of the sciences involved in space travel or the exploration of space, as space medicine.
noun 1. spacecraft. noun 1. a manned spacecraft
noun 1. a launch of a space vehicle beyond the earth’s atmosphere.