Metataxis (meta-tak-sIs): A change in the ordering of things. Derived from the ancient Greek meta tasso and inspired by the words Metadata and Taxonomy.
Meta-: Prefix, from the Greek, among, with, after; akin to Old English mid, mith, with, Old High German mit.  Occurring later than or in succession to: after.  Situated behind or beyond.  Later or more highly organised or specialised form of.
Tasso: ancient Greek, to arrange or put in order; to assign to a class.
Taxonomy: 1828, from French taxonomie, from Greek taxis (arrangement) + –nomia (method), from -nomos (managing) from nemein (to manage).
Data: from Latin, plural of datum.  Factual information used as a basis for reasoning, discussion, or calculation.  Information output by a sensing device or organ that must be processed to be meaningful.  Information in numerical form that can be digitally transmitted or processed.
Metadata: Information about information. In practice, metadata comprises a structured set of descriptive elements to describe an information resource or, more generally, any definable entity.