the mathematical operation of reversing the directions of all three space coordinates. Symbol: P.
- Space junk
noun 1. objects such as artificial satellites, material discarded from space stations, etc that remain in space after use noun debris from spaceships and satellites that remains in Earth’s orbit Examples Radio signals can bounce off of floating space junk.
- Space key
noun 1. a manned laboratory in space, developed by the European Space Agency, carried aboard an orbiting space shuttle. noun 1. a laboratory in space where scientific experiments are performed, esp one developed by the European Space Agency and carried on a space shuttle
noun 1. lattice (def 4). space lattice noun 1. (crystallog) the more formal name for lattice (sense 4)