hillclimbing noun3 •A form of motorsport in which drivers compete against the clock on an uphill course. •The act of climbing a hill.Some very fine hillclimbing now followed, with an acceleration to 35 m.p.h. on the 1 on 129 grade—an output of about 1,240 d.h.p. — 1947 •A simple form of optimization that starts with an arbitrary solution to a problem, then attempts to find a better solution by incrementally changing a single element of the solution.