New Delhi The capital of India, in the north-central part of the country south of Delhi. It was constructed 1912-1929 to replace Calcutta as the capital of British India and officially inaugurated in 1931. New Delhi is also a trade and transportation center.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.New Delhi n (Placename) See Delhi Collins English Dictionary ? Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014New` Del?hi (?d?l i) n. the capital of India, in the N part, adjacent to Delhi. 271,990. Compare Delhi (def. 2). Random House Kernerman Webster’s College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.