-stat

n. (in comb, -as, as apparatus or agent for keeping something specified stable or stationary; device for regulating or for maintaining something specified in a constant state) –स्थापी (पु.), अनुयोजी (पु.) (as in : gyrostat घूर्णस्थापी; cryostat निम्नतापस्थापी; rheostat रोधानुयोजी)