tek·tite (t?k?t?t?)n. Any of numerous generally small, rounded, dark brown to green glassy objects that are composed of silicate glass and are thought to have been formed by the impact of a meteorite with the earth’s surface.[Greek t?ktos, molten (from t?kein, to melt) + -ite.]tek·tit?ic (-t?t??k) adj.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.tektite (?t?kta?t) n (Geological Science) a small dark glassy object found in several areas around the world, thought to be a product of meteorite impact. See also moldavite[C20: from Greek t?ktos molten]Collins English Dictionary ? Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014tek?tite (?t?k ta?t) n. a small glassy body of enigmatic origin, groups of which are found on land and beneath the sea in scattered areas of the world. [1920?25;