echelette grating
1echelette — |eshə|let, |āsh noun ( s) Etymology: French échelette small rack, from Middle French eschelette small ladder, from eschele, eschiele ladder + ette : a reflection grating made by ruling parallel V shaped grooves in a polished metal plate so that… …
2echelette — /esh euh let , ay sheuh /, n. Spectography. a diffraction grating designed to reflect infrared radiation. Also called echelette grating. [ < F échelette rack, equiv. to échelle ladder (see ECHELON) + ette ETTE] * * * …
3echelle — I. āˈshel noun ( s) Etymology: French échelle ladder : a lacing of ribbons on the stomacher of a 17th century costume II. noun ( s) Etymology: French …
