▸ noun: A level or rank in an organization, profession, or society. ▸ noun: (cycling) A line of riders seeking maximum drafting in a crosswind, resulting in a diagonal line across the road. ▸ noun: (military) A formation of troops, ships, etc., in diagonal parallel rows. ▸ verb: (transitive, military) To form troops into an echelon. ▸ adjective: (linear algebra) Of a matrix: having undergone Gaussian elimination with the result that the leading coefficient or pivot (that is, the first nonzero number from the left) of a nonzero row is to the right of the pivot of the row above it, giving rise to a stepped appearance in the matrix. ▸ noun: An international SIGINT network to monitor and gather intelligence from satellite trunk communications.
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