gyrostabilizer

noun gy·ro·sta·bi·liz·er \ ˌjī-rō-ˈstā-bə-ˌlī-zər \
variants: or gyrostat play \ˈjī-rə-ˌstat\

Definition of gyrostabilizer

: a stabilizing device (as for a ship or airplane) that consists of a continuously driven gyro spinning about a vertical axis and pivoted so that its axis of spin may be tipped fore-and-aft in the vertical plane and that serves to oppose sideways motion

First Known Use of gyrostabilizer

1921

in the meaning defined above

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