lead·ing edge (l  d ng)n. 1. Nautical The edge of a sail that faces the wind. 2. The front edge of an airplane propeller blade or wing. 3. a. The foremost position in a trend or movement; the vanguard: "a company on the leading edge of machine-tool technology" (Christian Science Monitor). b. Someone or something occupying such a position: "Together they are the leading edge of a new wing of historians known as cliometricians" (Timothy Foote). lead ing-edge (ldng- j) adj. |
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| Noun | 1. |  leading edge - forward edge of an airfoil aerofoil, airfoil, control surface, surface - a device that provides reactive force when in motion relative to the surrounding air; can lift or control a plane in flight edge - a sharp side formed by the intersection of two surfaces of an object; "he rounded the edges of the box" |
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