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Dictionary definition for: Deficiency

1. (n) the state of needing something that is absent or unavailable; "there is a serious lack of insight into the problem" "water is the critical deficiency in desert regions" "for want of a nail the shoe was lost"

2. (n) lack of an adequate quantity or number; "the inadequacy of unemployment benefits"

WordNet 2.1 Copyright Princeton University. All rights reserved.