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definitions
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[tah]
noun
  1. the third letter of the Arabic alphabet.
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Origin of

From Arabic
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for

ta

interjection
  1. British informal thank you
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Word Origin for ta

C18: imitative of baby talk

Ta

the chemical symbol for
  1. tantalum
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TA

abbreviation for (in Britain)
  1. Territorial Army (now superseded by TAVR)
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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

Word Origin and History for

ta

1772, "natural infantile sound of gratitude" [Weekley].

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Online Etymology Dictionary, © 2010 Douglas Harper

in Medicine

Ta

  1. The symbol for the elementtantalum
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The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

in Science

Ta

  1. The symbol for tantalum.
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The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.