Relating to or involving the process of conducting or transmission, especially of heat or electricity through materials.
From 'conduction' (the act or process of conducting heat or electricity, from Latin 'conducere') plus the suffix '-al' (from Latin '-alis,' meaning relating to). This creates an adjective describing things pertaining to conduction.
Heat transfer engineers distinguish between 'conductional' heat transfer (through materials), 'convectional' (through moving fluids), and 'radiational' (through space)—these three words classify the very different ways heat moves through the universe.
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