What does plateau mean?
A plateau is, first, a broad area of raised land that is mostly level. It can also describe a period in which something—such as prices, demand, population, or personal progress—stays steady rather than rising or falling. In this figurative sense, the word often carries a mild implication of stagnation: progress has leveled off, and further change may be difficult. As a verb, “to plateau” means to reach and remain at such a stable level. The term is widely used in business, economics, science, health, and everyday discussion. For example, a product may plateau after rapid early growth, or a patient’s recovery may plateau before treatment is reconsidered. The word is useful because it captures not simply stability but the transition into, or persistence of, a relatively unchanging stage.
A broad, relatively level area of elevated land; also, a period of stability in which a quantity or process changes little.
"The settlement lies on a high plateau above the river."
In figurative uses, it often implies that growth or progress has leveled off.
To reach a stable level and stop increasing or developing significantly.
"Demand began to plateau in the second half of the year."
Usually used intransitively; the subject is the quantity or process that levels off.
The plural is used for multiple geographic plateaus or distinct periods of stability or leveling off.
"The survey identified several high plateaus across the region."
A plateau can describe both a landscape feature and the moment when progress unexpectedly levels off.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Where does plateau come from?
The English word comes from French, where plateau originally meant a flat or level tract of land. It developed from the French adjective plat, meaning “flat,” ultimately tracing to Latin plattus or a related form meaning “broad, flat, or level.” The same broad root underlies words such as plate, platitude, and platen, although their modern meanings and immediate historical paths differ.
Related word forms
How plateau is actually used
The noun is common in general, business, scientific, and economic contexts. In figurative use, “plateau” usually suggests that progress has slowed or stopped at a stable level, often with the implication that further improvement is possible but has become difficult. The verb is commonly used in reporting and analysis.
Easily confused with plateau
A plateau is a level area, stage, or period of stability, whereas a plate is a flat, usually rigid object or dish.