Ta Definition
 tä 
    interjection
  
 Used to express thanks.
 American Heritage 
Thank you.
 Webster's New World 
(colloquial, chiefly UK, Ireland, Australia and New Zealand) Thanks.
Wiktionary 
    abbreviation
  
 Teaching assistant.
 American Heritage Medicine 
    symbol
  
 Tantalum.
 Webster's New World 
Origin of Ta
Baby-talk alteration of thank you
From American Heritage Dictionary of the English Language, 5th Edition





