Plateau Definition

plă-tō
plateaued, plateauing, plateaus, plateaux
noun
plateaus, plateaux
An elevated tract of more or less level land; tableland; mesa.
Webster's New World
A period, level, etc. of relative stability, or relatively little change, as can be shown by a flat extent on a graph, etc.; specif., a period in which an individual's learning rate does not improve.
Webster's New World

(dated) An ornamental dish for the table; a tray or salver.

Wiktionary
(sports, broadcasting) A notable level of attainment or achievement.
Wiktionary
verb
To become relatively stable or constant, as in position.
Webster's New World

Other Word Forms of Plateau

Noun

Singular:
plateau
Plural:
plateaux

Origin of Plateau

  • French from Old French platel platter from plat flat plate

    From American Heritage Dictionary of the English Language, 5th Edition

  • From French plateau, diminutive of plat (“a plate"); see plate.

    From Wiktionary

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