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

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

Word Origin

C18: imitative of baby talk

Ta

the chemical symbol for
  1. tantalum

TA

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 Territorial Army (now superseded by TAVR)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

Online Etymology Dictionary, © 2010 Douglas Harper

in Medicine

Ta

  1. The symbol for the elementtantalum

in Science

Ta

  1. The symbol for tantalum.