fleeting/ˈfliːtɪŋ/EtymologyFrom Middle English fleten (“to float”), from Old English flēotan (“to float”), from Proto-Germanic *fleutaną, from Proto-Indo-European *plewd-. By surface analysis, fleet + -ing.fleeting means passing quickly; of short duration. Lexicurio rates it Distinctive — a strength score of 68 out of 100.adjPassing quickly; of short duration.“Architecture, sculpture, painting are static arts. Even in literature "our flying minds," as George Meredith says, cannot contain protracted description. It is so; for from sequences of words they must assemble all the details in one simultaneous impression. But moments of fleeting beauty too transient to be caught by any means less swift than light itself are registered on the screen.”That which flees, especially quickly; fugitive.nounAn automatic operation mode of an absolute signal that reserves a route for several trains following one another, without the need for dispatcher to re-set the route for each train.