cy·clo·pe·an (s??kl?-p???n, s?-kl??p?-)adj.1. often Cyclopean Relating to or suggestive of a Cyclops: a great Cyclopean monocle.2. Very big; huge: has a cyclopean ego.3. Of or constituting a primitive style of masonry characterized by the use of massive stones of irregular shape and size.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.Cyclopean (?sa?kl???pi??n; sa??kl??p??n) adj1. (Classical Myth & Legend) of, relating to, or resembling the Cyclops2. (Architecture) denoting, relating to, or having the kind of masonry used in preclassical Greek architecture, characterized by large dry undressed blocks of stoneCollins English Dictionary ? Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014Cy?clo?pe?an (?sa? kl??pi ?n, sa??kl?p i ?n) adj. 1. of or resembling the Cyclopes: a Cyclopean eye. 2. (sometimes l.c.) gigantic; vast. 3. (usu. l.c.) formed with or containing large, undressed stones fitted together without mortar. [1635?45;