[ad hoc] adv [L, for this] (1659): for the particular end or case at hand without consideration of wider application
[2]ad hoc adj (1879) 1 a: concerned with a particular end or purpose "an ad hoc investigating committee" b: formed or used for specific or immediate problems or needs "ad hoc solutions"
2: fashioned from whatever is immediately available: improvised "large ad hoc parades and demonstrations --Nat Hentoff"