What is "polyiodide"

Polyiodide \Pol`y*i"o*dide\, n. (Chem.) A iodide having more than one atom of iodine in the molecule.

n. (context chemistry English) A iodide having more than one atom of iodine in the molecule.

The polyiodides are a class of polyhalogen anions composed of entirely iodine atoms. The most common and simplest member is the triiodide ion, . Other known, larger polyiodides include [I], [I], [I], [I], [I], [I], [I], [I], [I], [I], [I], [I], [I], [I], [I] and [I].