NTabbr.1. New Testament2. Northwest TerritoriesnTabbr. nanoteslaAmerican 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.NT abbreviation for 1. National Trust 2. (Bible) New Testament 3. (Placename) Northern Territory (of Australia) 4. (Placename) (esp in postal addresses) Northwest Territories (of Australia) 5. (Placename) (esp in postal addresses) Nunavut 6. (Bridge) no-trump 7. (Education) (in Ireland) National Teacher (teacher in a National School) Collins English Dictionary ? Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014-n’t a contraction of not: didn’t; hadn’t; couldn’t; shouldn’t; won’t. NT or N.T., 1. New Testament. 2. Northern Territory. 3. Northwest Territories. 4. Nunavut. Random House Kernerman Webster’s College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.