ENTabbr. Medicine ear, nose, and throatAmerican 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.ENT abbreviation for (Medicine) ear, nose, and throat Collins English Dictionary ? Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014ENT ear, nose, and throat. -ent a suffix, equivalent to -ant, appearing in nouns and adjectives of Latin origin: accident; different. [