English noun: echelon | |||
1. | echelon (group) a body of troops arranged in a line | ||
Broader (hypernym) | force, military force, military group, military unit | ||
Domain category | armed forces, armed services, military, military machine, war machine | ||
2. | echelon (artifact) a diffraction grating consisting of a pile of plates of equal thickness arranged stepwise with a constant offset | ||
Broader (hypernym) | diffraction grating, grating | ||