1
Stage 1 of 3
gyros
Greek · ancient
"circle, turn"
circle, turn, combined with skopein (to view)
2
Stage 2 of 3
gyroscope
French · 1852
"turn-viewer"
coined by physicist Leon Foucault from Greek gyros (turn) and skopein (to view)
3
Stage 3 of 3
gyroscope
English · 1856
"a spinning device used to measure or maintain orientation"
adopted from French for the spinning device used to measure orientation
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