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positive ray

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noun Physics.

a stream of positive ions traveling from a metallic anode to the cathode in a gas-discharge tube.

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The rainy weather could not ________ my elated spirits on my graduation day.
Also called anode ray, canal ray.

Origin of positive ray

First recorded in 1900–05
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021
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