A refutation is a term used in an argument to refer to the act of refuting whatever's been said. This means that the term refers to the act of rebutting the claim made in an argument.
Similarly, in argumentative writing, the term 'refutation' will refer to the act of providing a rebuttal to the main argument point by the other person. It is the act of providing an argument that contradicts the argument presented. <u>A refutation almost always follows a counterclaim</u>.