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deficient number
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noun Mathematics.
a positive number that is greater than the sum of all positive integers that are submultiples of it, as 10, which is greater than the sum of 1, 2, and 5.
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On the farm, the feed for chicks is significantly different from the roosters’; ______ not even comparable.
Also called defective number.
Compare abundant number, perfect number.
Origin of deficient number
First recorded in 1720–30
Words nearby deficient number
deficiency account, deficiency disease, deficiency judgment, deficiency symptom, deficient, deficient number, deficit, deficit financing, deficit spending, de fide, defier
Dictionary.com Unabridged
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2022