raster (n.)youdaoicibaDictYouDict[raster 词源字典]
1934 in electrical engineering, from German Raster "screen, frame," from Latin rastrum "rake," from rasum, from rodere "to scrape" (see raze). Related: Rasterization; rasterize. From Latin form rastellum comes French râteau "rake," formerly ratel, originally rastel.[raster etymology, raster origin, 英语词源]