What is "sciamachy"

Sciamachy \Sci*am"a*chy\, n. See Sciomachy.

"fighting with shadows, shadow-boxing" 1620s, from Greek skiamakhia "shadow-fighting, a sham fight" but perhaps literally "fighting in the shade" (i.e., in school; ancient teachers taught in shaded public places such as porches and groves), from skia "shade, shadow" (see shine (v.)) + makhe "battle" (see -machy).

n. shadow-boxing; fighting that is futile or make-believe

SCIAMACHY (SCanning Imaging Absorption SpectroMeter for Atmospheric CHartographY; Greek: σκιάμάχη: analogously: 'Fighting shadows') was one of ten instruments aboard of ESA's ENVIronmental SATellite, ENVISAT. It was a satellite spectrometer designed to measure sunlight, transmitted, reflected and scattered by the earth's atmosphere or surface in the ultraviolet, visible and near infrared wavelength region (240 nm - 2380 nm) at moderate spectral resolution (0.2 nm - 1.5 nm).