What do a.m. and p.m. stand for?


noun acronym
train operating company
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for toc

word used for the letter T in radio communication, 1898.

Online Etymology Dictionary, © 2010 Douglas Harper
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Related Abbreviations for toc


  1. table of contents
  2. total organic carbon
The American Heritage® Abbreviations Dictionary, Third Edition
Copyright © 2005 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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