Ta

Multiple Entries:
  Ta    TA    ta    tantalum  

Concise Oxford English Dictionary © 2008 Oxford University Press:
Ta

▶symbol the chemical element tantalum.

Concise Oxford English Dictionary © 2008 Oxford University Press:
TA/tiːˈeɪ/

▶abbreviation (in the UK) Territorial Army.

Concise Oxford English Dictionary © 2008 Oxford University Press:
ta/tɑː/

▶exclamation Brit. informal thank you.

– origin C18: a child's word.

Concise Oxford English Dictionary © 2008 Oxford University Press:
tantalum /ˈtantələm/

▶noun the chemical element of atomic number 73, a hard silver-grey metal. (Symbol: Ta)

– derivatives
tantalic adjective.

– origin C19: from Tantalus (see tantalize), with ref. to its frustrating insolubility in acids.