Adamantium

Adamantium is a fictional metallic or crystalline material which has seen extensive use in comics, cartoons and video games. It is so named because the word "adamant," meaning unbreakable, or adamantine combined with the neo-Latin suffix "ium" resembles the naming form of many chemical elements. In its classical form, adamantium refers to any unbreakable or impenetrable object. However most commonly, adamantium is used as the name of an invulnerable fictional element or substance. Adamantium is a fictional chemical substance and metal alloy in the Marvel Comics universe. Adamantium is one of the most durable substances ever to be created by Earth science. The chemical and metallurgical processes needed to create it are incredibly difficult to achieve, exceedingly expensive, and its creation process is known to only a very few organizations, individuals, and governments in the Marvel Universe. Adamantium is, most famously, the metal bonded to Wolverine's entire skeleton. It first... full article at wikipedia