To titrate is to measure how much of a substance you have by measuring how much of the solution is required to achieve a given reaction.(verb)
An example of titrate is to keep measuring the additions of a chemical to a 2 gallon mixture of hydrogen and chlorine in order to determine how much of the chemical you need to add to get a reaction which will, in turn, tell you how much chlorine is in the mixture.
See titrate in Webster's New World College Dictionary
See titrate in American Heritage Dictionary 4
tr. & intr.v. ti·trat·ed, ti·trat·ing, ti·trates
Origin: From French titrer
Origin: , from titre, titer; see titer.
Learn more about titrate