metafile(A file that stores an image as graphical objects (lines, circles, polygons) rather than as pixels. Metafiles preserve an image more accurately than pixels when the image is resized; A file that contains or defines other files. Many operating systems use metafiles to contain directory information about other files on a given storage device)
Windows Media metafile(In Windows Media Technologies, a file that provides information about Windows Media files and their presentation. File name extensions for Windows Media metafiles include .asx, .wax, .wvx, .wmx, and .nsc)
