servomechanism

[ sur-voh-mek-uh-niz-uh m, sur-voh-mek- ]
/ ˈsɜr voʊˌmɛk əˌnɪz əm, ˌsɜr voʊˈmɛk- /

noun

an electronic control system in which a hydraulic, pneumatic, or other type of controlling mechanism is actuated and controlled by a low-energy signal.

Origin of servomechanism

First recorded in 1940–45; servo- + mechanism
Related formsser·vo·me·chan·i·cal [sur-voh-muh-kan-i-kuh l] /ˌsɜr voʊ məˈkæn ɪ kəl/, adjectiveser·vo·me·chan·i·cal·ly, adverb
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

British Dictionary definitions for servomechanism

servomechanism

/ (ˈsɜːvəʊˌmɛkəˌnɪzəm, ˌsɜːvəʊˈmɛk-) /

noun

a mechanical or electromechanical system for control of the position or speed of an output transducer. Negative feedback is incorporated to minimize discrepancies between the output state and the input control setting
Derived Formsservomechanical (ˌsɜːvəʊmɪˈkænɪkəl), adjective
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012