a symmetry element of a space group such that a reflection of the lattice with respect to the plane and a translation of the lattice parallel to the plane bring the lattice back to its original position.
[glahy-der] /ˈglaɪ dər/ noun 1. a motorless, heavier-than-air aircraft for from a higher to a lower level by the action of gravity or from a lower to a higher level by the action of air currents. 2. a porch swing made of an upholstered seat suspended from a steel framework by links or springs. 3. […]
noun, Aeronautics. 1. the angle that the glidepath of an aircraft or spacecraft makes with the horizontal.
- Glide time
noun 1. (NZ) a system permitting flexibility of working hours at the beginning or end of the day, provided an agreed period of each day (core time) is spent at work Also called (in Britain and certain other countries) flexitime
[glahyd] /glaɪd/ verb (used without object), glided, gliding. 1. to move smoothly and continuously along, as if without effort or resistance, as a flying bird, a boat, or a skater. 2. to pass by gradual or unobservable change (often followed by along, away, by, etc.). 3. to move quietly or stealthily or without being noticed […]