A requisite is something which is necessary for a particular purpose. An understanding of accounting techniques is a major requisite for the work of the analysts. needed for a particular purpose = necessary, required required (past participle of requirere; REQUIRE). something that is needed for a particular purpose requisite of/for
anything indispensable; "food and shelter are necessities of life"; "the essentials of the good life"; "allow farmers to buy their requirements under favorable conditions"; "a place where the requisites of water fuel and fodder can be obtained"