gyroscope

Where does the word "gyroscope" come from? It comes from Greek gyros, passing through French before entering English (1856).

Gyroscope’s story begins in Greek: gyros meant “circle, turn.” Circle, turn, combined with skopein (to view). By 1852, the word had taken hold in French as gyroscope. Coined by physicist Leon Foucault from Greek gyros (turn) and skopein (to view). It reached English by 1856 as gyroscope. Named by the physicist Léon Foucault in 1852, who used it to show the Earth's rotation. Today, gyroscope means a spinning device used to measure or maintain orientation.

1. Stage 1 · Greek · ancient gyros "circle, turn", circle, turn, combined with skopein (to view).
2. Stage 2 · French · 1852 gyroscope "turn-viewer", coined by physicist Leon Foucault from Greek gyros (turn) and skopein (to view).
3. Stage 3 · English · 1856 gyroscope "a spinning device used to measure or maintain orientation", named by the physicist Léon Foucault in 1852, who used it to show the Earth's rotation.