Définitions
1.NounEach circle, volution or equivalent in a pattern of concentric circles, ovals, arcs, or a spiral.
2.NounA circle of three or more leaves, flowers, or other organs, about the same part or joint of a stem.
3.NounA volution, or turn, of the spire of a univalve shell.
4.NounAny volution, as for example in the human ear or fingerprint.
5.NounA flywheel, a weight attached to a spindle. .mw-parser-output .defdate{font-size:smaller}
6.VerbTo form a pattern of concentric circles.