definition of
necessitate

[1] #1 necessitate v. [ask, postulate, need, require, take, involve, call for, demand] require as useful, just, or proper; "It takes nerve to do what she did"; "success usually requires hard work"; "This job asks a lot of patience and skill"; "This position demands a lot of personal sacrifice"; "This dinner calls for a spectacular dessert";. wn

[2] #2 necessitate v. cause to be a concomitant. wn