Adamante'an. adj. [from adamant.] Hard as adamant.
He ran on embattel'd armies clad in iron,
And weaponless himself,
Made arms ridiculous, useless the forgery
Of brazen shield and spear, the hammer'd cuirass,
Chalybean temper'd steel, and frock of mail
Adamantean proof. Milton's Samson Agonistes, l. 134.
This word occurs perhaps only in this passage.