English

gyrokinetics

From gyro- + kinetics.

Proto-Indo-European *gew- ‘to curve, to bend’

Ancient Greek γῦρος ‘circle’

English gyro-

Proto-Indo-European *keyh₂- ‘to start to move’

Ancient Greek κῑνέω ‘I move’

Ancient Greek κῑ́νησῐς ‘motion’

Ancient Greek κινητικός ‘kinetic’

Today it means

noun The branch of physics concerned with the helical flow of particles in the magnetic field of a plasma

Language periods are conventional ranges, not dates for this word.

Etymograph / gyrokinetics