definition of
requirement

[1] #1 requirement n. [demand] required activity; "the requirements of his work affected his health"; "there were many demands on his time". wn

[2] #2 requirement n. [necessity, essential, requisite, necessary] 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". wn

[3] #3 requirement n. [prerequisite] something that is required in advance; "Latin was a prerequisite for admission". wn