Dependance

from WordNet (r) 3.0 (2006)

dependance
    n 1: being abnormally tolerant to and dependent on something
         that is psychologically or physically habit-forming
         (especially alcohol or narcotic drugs) [syn: {addiction},
         {dependence}, {dependance}, {dependency}, {habituation}]
    2: the state of relying on or being controlled by someone or
       something else [syn: {dependence}, {dependance},
       {dependency}]

from The Collaborative International Dictionary of English v.0.48

Dependant \De*pend"ant\, Dependance \De*pend"ance\, n.,
Dependancy \De*pend"an*cy\, n.
   See {Dependent}, {Dependence}, {Dependency}.
   [1913 Webster]

   Note: The forms dependant, dependance, dependancy are from
         the French; the forms dependent, etc., are from the
         Latin. Some authorities give preference to the form
         dependant when the word is a noun, thus distinguishing
         it from the adjective, usually written dependent.
         [1913 Webster]