It is a very stable compound, and is believed to be active principle in thyroid extracts and in the internal secretion of the thyroid gland. It was originally called thyroiodin.
IODOUS
I"o*dous, a. (Chem.)
Defn: Pertaining to, or containing, iodine. See -ous (chemical suffix). Iodous acid, a hypothetical acid, analogous to chlorous acid.
IODURET
I*od"u*ret, n. (Chem.)
Defn: Iodide. [Obs.]
IODYRITE
I*od"y*rite, n. Etym: [From Iodine.] (Min.)
Defn: Silver iodide, a mineral of a yellowish color.
IOLITE
I"o*lite, n. Etym: [Gr. -lite.] (Min.)
Defn: A silicate of alumina, iron, and magnesia, having a bright blue color and vitreous luster; cordierite. It is remarkable for its dichroism, and is also called dichroite.
IO MOTH
I"o moth`. (Zoöl.)