Advancing surface
Ad`van´cing sur´face
1. | (Aëronautics) The first of two or more surfaces arranged in tandem; - contr. with following surface, which is the rear surface. |
Webster's Revised Unabridged Dictionary, published 1913 by G. & C. Merriam Co.
1. | (Aëronautics) The first of two or more surfaces arranged in tandem; - contr. with following surface, which is the rear surface. |