echelon echelette • echelonment · · · Info · Definitions · Characters · · echelon · · Text Latin · · Script 7 · · Length Definitions · · · (noun) a body of troops arranged in a line. · · Noun Definition 1 (noun) a diffraction grating consisting of a pile of plates of equal thickness arranged stepwise with a constant offset. · · Noun Definition 2 Characters · · c latin small letter c U+0063 e latin small letter e U+0065 h latin small letter h U+0068 l latin small letter l U+006C n latin small letter n U+006E o latin small letter o U+006F