noun
steep sloping land; steep terrain
Refers to land with a steep gradient, often used in contexts such as disaster prevention, construction regulations, or geographical descriptions.
急傾斜地崩壊危険区域に指定された。
It was designated as a steep slope failure danger zone.
この地域は急傾斜地が多いため、家を建てるのが難しい。
Because this area has many steep slopes, it is difficult to build houses.
Compound of 急 (steep), 傾斜 (slope, inclination), and 地 (land, ground). The word is a straightforward technical term formed from these elements.