The term is a modern English compound noun, transparently built from three native and borrowed elements. "White" originates from a Proto-Germanic root for brightness and pallor, contrasting with the red color of hemoglobin-rich cells. "Blood" has a deep Germanic lineage, referring to the vital circulating fluid. "Cell" entered English via Latin, its meaning shifting from a small chamber to the fundamental unit of life in biology. The compound's logic is directly descriptive: it names the colorless corpuscles found within the blood fluid.

Structure: white (color) + blood (fluid) + cell (unit) - white: From Old English hwīt, of Germanic origin; related to Dutch wit and German weiss. Functions as an adjective describing color. - blood: From Old English blōd, of Germanic origin; related to Dutch bloed and German Blut. Functions as a noun denoting the vital fluid. - cell: From Latin cella, meaning 'storeroom' or 'small room'. Functions as a noun denoting a basic biological unit.