Penurun
Penurun is an Indonesian term referring to any agent, device, or process that lowers a value, criterion, or quantity. It is formed from the agent noun prefix pen- attached to turun, meaning to fall or decrease. As a general noun, penurun can describe things that reduce temperature, pressure, emissions, costs, or other metrics.
In everyday and technical language, phrases such as penurun suhu (temperature reducer), penurun tekanan (pressure reducer),
In chemistry, the more precise term for a substance that causes reduction is agen pereduksi or reduktor;
The meaning of penurun is therefore context-dependent. It functions as a flexible label for anything that lowers