'Polydipsia' definitions:

Definition of 'polydipsia'

(from WordNet)
noun
Excessive thirst (as in cases of diabetes or kidney dysfunction)

Definition of 'Polydipsia'

From: GCIDE
  • Polydipsia \Pol`y*dip"si*a\, n. [NL., fr. Gr. poly`s much + ? thirst.] (Med.) Excessive and constant thirst occasioned by disease. [1913 Webster]