| ilmenite | <chemical> Titanic iron. See Menaccanite. Origin: So called from Ilmen, a branch of the Ural Mountains. Source: Websters Dictionary (01 Mar 1998) |
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| ilmenium | <chemistry> A supposed element claimed to have been discovered by R.Harmann. Origin: NL. See Ilmenite. Source: Websters Dictionary (01 Mar 1998) |