ul·tra·so·nog·ra·phy (?l?tr?-s?-n?g?r?-f?)n. The use of high-frequency sound waves to image internal body structures, a developing fetus, or objects and currents that are underwater. Also called echography.ul?tra·so·nog?ra·pher n.ul?tra·son?o·graph?ic (-s?n??-gr?f??k, -s??n?-) 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.ultrasonography (??ltr?s??n??r?f?) n (Medicine) the technique of using ultrasound to produce pictures of structures within the body, as for example of a fetusCollins English Dictionary ? Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014ul?tra?so?nog?ra?phy (??l tr? s??n?g r? fi, -so?-) n. a diagnostic imaging technique utilizing reflected ultrasonic waves to delineate, measure, or examine internal body structures or organs. [1950?55] Random House Kernerman Webster’s College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.ultrasound, ultrasonography – Ultrasounds and ultrasonography work on the principle that sound is reflected at different speeds by tissues or substances of different densities.See also related terms for reflected.Farlex Trivia Dictionary. © 2012 Farlex, Inc. All rights reserved.