Required; essential. See Synonyms at indispensable. (adjective)
Something that is indispensable; a requirement. (noun)
American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Use "requisite" in a sentence
"He couldn't quite get it together on special teams and we found that for a man who is a little bit short, he did not have what we call the requisite bore - the ability to turn the corner - that both Dwight and Robert have."
"Beginners are welcome - the only pre-requisite is a willingness to learn."
"From reading the relevent section it appears that the only requisite is that you are wearing a uniform."