A pipe or channel for conveying hot water or steam, especially in heating systems or industrial applications.
From Latin calidus (warm/hot) + ductus (led, conducted), from ducere (to lead). This technical term combines two Latin roots to describe a vessel or channel that conducts heat.
This word is a fossil of Roman engineering genius—the Romans actually built sophisticated hot-water systems called hypocausts, and caliduct preserves that Latin engineering vocabulary for describing modern heating systems.
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