Adamantium is a fictional metallic or crystalline substance which has seen extensive use in works of fantasy, 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 a nearly invulnerable fictional element or substance.
