Also called control. Statistics. a person, group, event, etc., that is used as a constant and unchanging standard of comparison in scientific experimentation.
Compare (def 2), (def 2).
(in computer programming) a variable that is used to regulate the flow of control, or order of execution, generally the number of times a loop will execute.
any factor that remains unchanged and strongly influences values; also, a factor held constant to test the relative impact of an independent variable
noun See contranym
adj. 1610s, from Latin controversus “turned against” (see controversy) + -al (1).
v. c.1600, from French controversé, from Latin controversus (see controversy).
adj. c.1600, from stem of Latin controversus (see controversy) + -ary.