reaktif

Reaktif is a term used to describe something that responds to inputs or stimuli. In Indonesian-language usage, it functions as an adjective meaning reactive. In scientific and technical contexts, reactivity concerns how readily a substance or system undergoes change, participates in a reaction, or alters its properties in response to environmental conditions such as temperature, pressure, light, or chemical surroundings.

The concept of reaktivitas or reaktivitasitas spans several fields. In chemistry and materials science, reactivity influences reaction rates, mechanism, catalysis, corrosion, and polymerization. In physics and engineering, reactive materials or systems exhibit changes in physical properties or behavior when subjected to stimuli. In biology and medicine, reactive responses describe how organisms react to pathogens, drugs, or other stimuli. In environmental science, reactivity can affect processes such as atmospheric chemistry and pollutant degradation. In information technology, a related notion—reactive or event-driven systems—describes software architectures that respond to events rather than following a predetermined sequence.

Etymology and usage notes: The term is cognate with the English "reactive" and with similar forms in other languages, reflecting the core idea of responsiveness. In Indonesian contexts, "reaktif" is common in textbooks, laboratory manuals, and scientific journalism. When encountered as a capitalized proper noun or brand name, its meaning and implications depend on the specific context and product.