armor-plated

The compound adjective "armor-plated" is a modern military and industrial term. Its first element, "armor," traces back to the Latin armatura, meaning equipment or gear for war, which itself derives from arma (tools, arms). The second element, "plate," originates from the Greek platys (broad, flat) via Latin, referring to a flat sheet of metal. The suffix "-ed" converts the verb phrase "to plate with armor" into a descriptive adjective. Thus, the term's literal logic is "fitted with a flat, protective metal covering," directly reflecting its contemporary use for vehicles or animals protected by steel sheets.

Structure: armor (protective covering) + plate (sheet of metal) + ed (adjective suffix) - armor: From Old French armeure, ultimately from Latin armatura (equipment, armor). Functions as a noun root specifying the type of protective covering. - plate: From Old French plate (a thin sheet of metal), from Vulgar Latin plattus (flat). Functions as a verb root meaning to cover with sheets of metal. - ed: From Old English -ed, -od, -ad (past participle suffix). Functions as a suffix forming participial adjectives.