from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. A fictional metal that is indestructible or nearly so.
  • adj. Made of adamantium.


From adamant +‎ -ium. (Wiktionary)



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  • A fictional metallic or crystalline material which has seen extensive use in comics, cartoons and video games. 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. (Wikipedia)

    May 23, 2008

  • see adamantine, a "real" word.

    October 18, 2007

  • This may be my favorite sci-fi fake element, but I'm curious to see others. Oooh! *makes list*

    October 17, 2007