Definition of plateau
(Entry 1 of 2)
1a
: a usually extensive land area having a relatively level surface raised sharply above adjacent land on at least one side : tableland
b
: a similar undersea feature
2a
: a region of little or no change in a graphic representation
b
: a relatively stable level, period, or condition
3
: a level of attainment or achievement
the 500-point plateau
plateau
verb
plateaued; plateauing; plateaus
Definition of plateau (Entry 2 of 2)
: to reach a level, period, or condition of stability or maximum attainment
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Merriam-Webster unabridged
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Time Traveler for plateau
The first known use of plateau was in 1743
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