a. Obs. rare–1. [f. L. adamantē-us adj. (f. adamant- + -E-) + -AN.] Of adamant; of the nature or strength of adamant.
1671. Milton, Samson, 134. Chalybean tempered steel, and frock of mail Adamantean proof.
a. Obs. rare–1. [f. L. adamantē-us adj. (f. adamant- + -E-) + -AN.] Of adamant; of the nature or strength of adamant.
1671. Milton, Samson, 134. Chalybean tempered steel, and frock of mail Adamantean proof.
