a structure consisting of something wound in a continuous series of loops | lens used to concentrate light on an object |
reactor consisting of a spiral of insulated wire that introduces inductance into a circuit | an electrical device characterized by its capacity to store an electric charge |
tubing that is wound in a spiral | a hollow coil that condenses by abstracting heat |
a contraceptive device placed inside a woman's womb | an apparatus that converts vapor into liquid |
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) | |