The term 'wire-haired' is a modern English compound adjective, a descriptive label created by combining three native Germanic elements. The word 'wire', originally denoting metal drawn into a thin, flexible thread, is used metaphorically to evoke the stiff, coarse, and springy texture of a specific type of animal coat. This is attached to 'hair', the Old English word for the collective filaments growing from the skin, and the adjectival suffix '-ed', which signifies possession of these qualities. The compound's logic is transparently descriptive, directly comparing the physical properties of the hair to that of wire, a usage that emerged in the 19th century specifically within the context of dog breeding to classify breeds like the Wire Fox Terrier.

Structure: wire (metal thread) + hair (strand from skin) + ed (adjective suffix) - wire: From Old English wīr, of Germanic origin. In this compound, it functions as a metaphorical descriptor for the texture of the hair. - hair: From Old English hǣr, of Germanic origin. It functions as the core noun denoting the physical feature being described. - ed: A common English suffix forming adjectives from nouns, indicating 'having' or 'characterized by'.