'Desideratum' definitions:

Definition of 'desideratum'

From: WordNet
noun
Something desired as a necessity; "the desiderata for a vacation are time and money"

Definition of 'Desideratum'

From: GCIDE
  • Desideratum \De*sid`e*ra"tum\, n.; pl. Desiderata. [L., fr. desideratus, p. p. See Desiderate.] Anything desired; that of which the lack is felt; a want generally felt and acknowledge. Desidiose