siderurgical,a.|sɪdəˈrɜːdʒɪkəl| [f. next + -ical.] Pertaining to siderurgy. 1870tr.Figuier's Primitive Man 302 A model..of a siderurgical establishment belonging to the earliest iron epoch.1878Ure's Dict. Arts (ed. 7) IV. Suppl. 470 At present siderurgical industry yields two series of products.