four-block

The compound "four-block" is a transparent modern English formation, combining the cardinal number "four" with the urban planning term "block." The word "four" has a deep Indo-European lineage, traceable to the Proto-Indo-European root kʷetwóres, which gave rise to its equivalents in Latin (quattuor) and Greek (tessares), before evolving through Proto-Germanic into Old English. "Block" entered English via Old French from a Germanic source, originally referring to a solid piece of material, a meaning which expanded in an urban context to denote a rectangular area of land bounded by streets. The compound logically describes a specific, simple geometric configuration in city design, where four such units are arranged contiguously, demonstrating how basic numerical and spatial concepts combine to create precise technical terminology.

Structure: four (number) + block (unit) - four: From Old English fēower, of Proto-Germanic origin; related to Dutch vier and German vier, from an Indo-European root shared by Latin quattuor and Greek tessares. Functions as a numerical quantifier. - block: From Middle English blok, from Old French bloc, of Germanic origin, possibly from a root meaning 'a large piece of wood or log'. Functions as a noun denoting a defined area or unit of urban land.