in·te·gra·tor /-ˌgretɚ/ 名詞
In·te·gra·tor n. Math. & Mech. That which integrates; esp., an instrument by means of which the area of a figure can be measured directly, or its moment of inertia, or statical moment, etc., be determined.
n : a measuring instrument for measuring the area of an
irregular plane figure [syn: planimeter]