iodometry

from The Century Dictionary.

• noun In chem., properly, the quantitative determination of iodine, usually by means of a standard solution of a thiosulphate or an arsenite, iodine acting in the presence of water as an indirect oxidizing agent.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun chemistry An analytical technique that uses the sudden disappearance (or appearance) of iodine to mark the end of a redox titration