Noun

1. A fact or assertion offered as evidence that something is true
2. A contentious speech act; a dispute where there is strong disagreement
3. A discussion in which reasons are advanced for and against some proposition or proposal
4. A summary of the subject or plot of a literary work or play or movie
5. (computer science) a reference or value that is passed to a function, procedure, subroutine, command, or program
6. A variable in a logical or mathematical expression whose value determines the dependent variable; if f(x)=y, x is the independent variable
7. A course of reasoning aimed at demonstrating a truth or falsehood; the methodical process of logical reasoning