Pronunciation: (tī'trāt), [key]
—v.t., v.i., -trat•ed, -trat•ing. Chem.
to ascertain the quantity of a given constituent by adding a liquid reagent of known strength and measuring the volume necessary to convert the constituent to another form.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.