man-hour

The term 'man-hour' is a modern compound noun formed within the English language during the era of industrial management and scientific analysis of labor. It combines the Old English root 'man', referring broadly to a human worker, with 'hour', a unit of time measurement descended from the Greek 'hōra'. The compound exemplifies a logical, quantitative approach to productivity, literally conceptualizing work output as the product of human presence and elapsed time. This metonymic shift transforms the abstract concept of labor into a concrete, countable unit for planning, costing, and efficiency measurement.

Structure: man (person) + hour (unit of time) - man: From Old English 'mann', meaning 'person, human being'. In this compound, it functions as a noun denoting the agent performing the work. - hour: From Old French 'hore', ultimately from Latin 'hora' and Greek 'hōra', meaning 'season, hour'. In this compound, it functions as a noun denoting a fixed unit of time.