The plural of acclivity; multiple upward slopes or steep inclines.
From Latin acclivitas, derived from acclivis (steep, ascending). The root combines ad- (toward) + clivus (slope or hill), originally describing geographical terrain.
While 'acclivity' is obscure, hikers and geologists still use it to describe slopes where elevation gain is steep—the opposite of 'declivity,' which describes downward slopes.
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