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Echelon
01
a diffraction grating consisting of a pile of plates of equal thickness arranged stepwise with a constant offset
Grammatical Information
animacy status
inanimate
Composition
Simple
countable
plural form
echelons
02
a diagonal formation of things, especially used in military troops
03
a level or rank in an organization, profession, or society, indicating a person's status or authority within that hierarchy
Examples
She worked hard for years to reach the upper echelons of the corporate world.
