rotation, go around
旋 centers on circular movement: turning, revolving, or going around something. The idea of rotation covers both physical spinning and the act of moving along a circular path.
旋 combines 方 (direction/orientation) with a right side that historically represented a turning or revolving motion. The exact origin of the right component is uncertain, but the character as a whole conveys rotation.
The left side 方 suggests a direction, and the right side 疋 looks like a person walking in a circle. Picture someone pacing around a fixed point, always turning: 旋 means rotation.
For セン, imagine a spinning centrifuge: cent -> セン, and the machine rotates samples around and around.
revolution; rotation; turning; circling; swiveling
good offices; kind offices; services; influence; recommendation
triumphant return; returning in triumph
melody; tune
spiral; helix
whirlwind
lathe
hair whorl
rotation; revolution; convolution
Ionian mode
Aeolian mode
turret lathe
Dorian mode
Phrygian mode
Lydian mode
great sensation; taking something by storm; making a splash
main melody; lead
double helix (structure of DNA)
internal rotation (rotating a limb towards the midline of the body); medial rotation; endorotation
performance given after a successful tour abroad