a structure consisting of something wound in a continuous series of loops | an arrangement of coils used in sensitive electrical instruments; the coils are arranged to give zero resultant external magnetic field when a current passes through them and to have zero electromotive force induced in them by an external magnetic field |
reactor consisting of a spiral of insulated wire that introduces inductance into a circuit | |
tubing that is wound in a spiral | |
a contraceptive device placed inside a woman's womb | |
a transformer that supplies high voltage to spark plugs in a gasoline engine | |
a round shape formed by a series of concentric circles (as formed by leaves or flower petals) | |