CALS (kælz) n. a set of standards mandated by the U.S. Department of Defense for technical documentation in electronic form, including SGML markup of the document structure. [C(omputer-aided) A(cquisition and) L(ogistics) S(upport)] Random House Kernerman Webster’s College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.