Iodine is a chemical element with symbol I and atomic number 53. The heaviest of the stable halogens, it exists as a lustrous, purple-black metallic solid at a standard conditions that sublimes readily to form a violet gas. The elemental form was discovered by the French chemist Bernard Courtois in 1811.
Definition of CHOLLA. : any of numerous shrubby opuntias chiefly of the southwestern United States and Mexico that have needlelike spines partly enclosed in a papery sheath and cylindrical joints âcalled also cholla cactus.
More About Tomatillos. Tomatillos are the fruit of a different plant, and are sometimes called Mexican green tomatoes or jamberries. They are also green, although they can ripen to yellow. Tomatillos are coated in a sticky residue and covered with a thin, papery husk on the outside.