metadata /ˈmɛt.əˌdeɪ.tə/ noun2 •Data that describes other data, serving as an informative label.Most websites contain metadata to tell the computer how to lay out the content on the screen. •Structured information about a file (date created, creator, software used to create, last modified, file format, file fingerprint, etc).That photo's metadata suggests it was edited using Photoshop.