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highly significant or important especially bringing about or marking the beginning of a new development or era
a person who receives support and protection from an influential patron who furthers the protege's career.
(physics) a short-lived oscillation in a system caused by a sudden change of voltage or current or load
generator consisting of a coil (the armature) that rotates between the poles of an electromagnet (the field magnet) causing a current to flow in the armature
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