adj ·Rare ·Advanced level

Definitions

Adjective

1. 1
   Extremely deficient.
2. 2
   Having the property that, for some positive integer k, δk(n) > 0, where δk(n) = n(k+1) +(k-1) –kσ(n) and σ(n) is the sum of the positive divisors of n.

Etymology

From hyper- + deficient.

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.