deficients

/D AH0 F IH1 SH AH0 N T S/
adjective
  1. 1

    Lacking something essential; often construed with in.

  2. 2

    Insufficient or inadequate in amount.

  3. 3

    (mathematics) Of a number n, Having the sum of divisors ฯƒ(n)<2n, or, equivalently, the sum of proper divisors (or aliquot sum) s(n)<n.

noun
  1. 1

    A person who is deficient.