a structure consisting of something wound in a continuous series of loops | (physics) any of several kinds of apparatus that maintain and control a nuclear reaction for the production of energy or artificial elements |
reactor consisting of a spiral of insulated wire that introduces inductance into a circuit | an electrical device used to introduce reactance 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) | |