Brownouts

Part of speech: noun

Definitions

1. A temporary reduction in voltage in an electrical power system, often leading to fluctuations in power supply and dimming of lights
2. A controlled drop in electricity availability to prevent complete outages during peak demand times
3. A short-term interruption in service that can occur in regions experiencing high electricity use or system strain

Etymology: "Brownouts" is the plural of "brownout," a noun for a partial reduction in electrical power. The word was formed by analogy with "blackout," a total loss of power or light, and the spelling "brown" points to the dimming that happens when a grid strains under heavy demand: lights glow weakly and turn dull rather than vanishing outright. The first element, "brown," describes that dull, dimmed quality, while "out" is the same particle that appears in "blackout." The term is built on the phrasal verb "brown out," which came first. Speakers took the pattern of "black out" and "blackout," changed the colour, and produced a noun for a lesser version of the same event. Because the formation is a clear analogy rather than a borrowing, its history is recent and tied to the modern electricity grid, where power shortages can cut voltage without cutting it entirely.

Synonyms: power outage, blackout