Echelon
[n] a diffraction grating consisting of a pile of plates of equal thickness arranged stepwise with a constant offset
[n] a body of troops arranged in a line
Related Information
Related Terms
battle array, caste, class, close formation, condition, deployment, disposition, file, footing, formation, formation flying, hierarchy, open order, order, order of battle, place, position, power structure, precedence, queue, rank, rate, rating, row, spher