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additive identity

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noun Mathematics.

an element that when added to a given element in a specified set leaves that element unchanged, as zero in the real-number system.

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The rainy weather could not ________ my elated spirits on my graduation day.

Origin of additive identity

First recorded in 1955–60
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021
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