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deficient

Pronunciation: /dɪˈfɪʃənt/

The English word “deficient” has 4 meanings listed here.

adjective

  1. Lacking something essential; often construed with in.
  2. Insufficient or inadequate in amount.
  3. Of a number n, Having the sum of divisors σ(n) < 2n, or, equivalently, the sum of proper divisors (or aliquot sum) s(n) < n.

noun

  1. A person who is deficient.

Etymology

From Latin deficiens, present participle of deficere (“to lack, fail, be wanting”); see defect.

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Definitions are from Wiktionary, extracted by Kaikki.org, and are available under the CC BY-SA 4.0 licence.