A·da (??d?)n. A programming language, similar to Pascal and developed for the US Department of Defense.[After Ada Lovelace.]ADAabbr.1. American Dental Association2. Americans with Disabilities ActAmerican 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.Ada (?e?d?) n (Computer Science) a high-level computer programming language designed for dealing with real-time processing problems: used for military and other systems[C20: named after Ada, Lady Lovelace, the English mathematician, daughter of Lord Byron (1815?52), who worked with Charles Babbage (1792?1871) and whose description of his computing machines preserved them for posterity]Collins English Dictionary ? Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014ADA 1. American Dental Association. 2. American Diabetes Association 3. Americans for Democratic Action. Random House Kernerman Webster’s College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.