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partial sum

noun Mathematics.

one of a series of sums of elements of a given sequence, the first sum being the first element, the second sum being the first element added to the second element, the third sum being equal to the sum of the first three elements, and so on.

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You may have read the word "simmer" in a recipe or two, but what does it really mean?
To cook in water that begins cold and then reaches a boil.
To stew in a sauce for a long time.
To cook in water, just below boiling temperature.
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Origin of partial sum

First recorded in 1925–30

Words nearby partial sum

partial pressure, partial product, partial reinforcement, partial score, partial seizure, partial sum, partial-thickness flap, partial-thickness graft, partial tone, partial vacuum, partial volume
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020