met·a·da·ta (m?t??-d??t?, -d?t??, -dä?t?)pl.n. (used with a sing. or pl. verb) Data that describes other data, as in describing the origin, structure, or characteristics of computer files, webpages, databases, or other digital resources.American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.metadata pl n (Communications & Information) computing information that is held as a description of stored data Collins English Dictionary ? Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014metadataInformation about information; more specifically, information about the meaning of other data. See also data; information.Dictionary of Military and Associated Terms. US Department of Defense 2005.