noun pl. plateaus or plateaux
- an elevated tract of more or less level land; tableland; mesa
- 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
Origin:
Fr < OFr platel, dim. < plat: see plate
intransitive verb
to become relatively stable or constant, as in position