a wave the energy of which is concentrated near a boundary or between parallel boundaries separating different materials and that has a direction of propagation parallel to these boundaries.
noun 1. .
noun, Military. 1. a command to a marching formation to align itself with a guide marching at the left side of the formation.
[gahyd] /gaɪd/ verb (used with object), guided, guiding. 1. to assist (a person) to travel through, or reach a destination in, an unfamiliar area, as by accompanying or giving directions to the person: He guided us through the forest. 2. to accompany (a sightseer) to show points of interest and to explain their meaning or […]
[gahyd-lahyn] /ˈgaɪdˌlaɪn/ noun 1. any or indication of a future course of action: guidelines on the government’s future policy. 2. a lightly marked used as a , as in composing a drawing, a typed page, or a of lettering. 3. a rope or cord that serves to one’s steps, especially over rocky terrain, through underground […]