thirstiness

from WordNet (r) 3.0 (2006)

thirstiness
    n 1: a deficiency of moisture (especially when resulting from a
         permanent absence of rainfall) [syn: {aridity}, {aridness},
         {thirstiness}]
    2: a physiological need to drink [syn: {thirst}, {thirstiness}]
    3: strong desire for something (not food or drink); "a thirst
       for knowledge"; "hunger for affection" [syn: {hunger},
       {hungriness}, {thirst}, {thirstiness}]

from The Collaborative International Dictionary of English v.0.48

Thirstiness \Thirst"i*ness\, n.
   The state of being thirsty; thirst.
   [1913 Webster]