MEST (18)

of the physical universe. A word coined from the initial letters of Matter, Energy, Space and Time, which are the component parts (elements) of the physical universe. Also used as an adjective, in the same sense to mean physical - as in "MEST universe," meaning the "physical universe." —Freedom Congress Glossary (approved 5-9-90), —Academy Level II Glossary, —Org Board and Livingness Approved 25.2.91