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), and penurun biaya (cost-cutting measure) illustrate its use. In engineering, environmental science, and economics, penurun concepts describe methods, systems, or devices aimed at lowering a target parameter while considering safety, efficiency, and practicality.

In chemistry, the more precise term for a substance that causes reduction is agen pereduksi or reduktor; penurun is less common in formal chemistry writing. In such contexts, using the standard terminology helps avoid ambiguity, but penurun may appear in broader discussions about reducing practices or general processes.

The meaning of penurun is therefore context-dependent. It functions as a flexible label for anything that lowers a measurable quantity, from technical equipment to policy measures or everyday practices intended to reduce a value such as energy use, emissions, or costs. Related terms include pengurang (a more general reducer), agen pereduksi (reducing agent), and penurunan (the act or result of lowering).