ARMOR-PLATED • E-FREE TRANSLATION.COM • Definition of Armor-plated

... of an algorithm or implementation considered extremely {robust}; lossage-resistant; capable of correctly recovering from any imaginable exception condition — a rare and valued quality. Syn. {armor-plated}. ...

— The Jargon File, Version 4.0.0

... Confederate batteries at Sewell's Point, and never re-appeared in service. The relief to the North by this victory was incalculable. Not only had the Merrimac been stopped in her expected bombardment of Northern cities, but the success of the Monitor assured to the government a class of armor-plated vessels that could be of great value in the coast service to which our naval operations were principally confined. Against land batteries they would prove especially formidable. Ericsson who constructed the Monitor and Lieutenant Worden who commanded ...

— Twenty Years of Congress, Vol. 1 (of 2) • James Gillespie Blaine