De*pend"ant (?), De*pend"ance (?), n., De*pend"an*cy (?), n.
See Dependent, Dependence, Dependency.
⇒ 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.
© Webster 1913.