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.
Edible cactus is also known as nopales (no-PAHles), nopalitos or cactus pads. This vegetable is popular in Mexico and other Central American countries, parts of Europe, the Middle East, India, North Africa and Australia.dible cactus is characterized by its fleshy oval leaves (typically called pads or paddles) of the nopal (prickly pear) cactus. With a soft but crunchy texture that also becomes a bit sticky (not unlike okra) when cooked, edible cactus tastes similar to a slightly tart green bean, asparagus, or green pepper.