U.S. Govt.
a senator, usually a senior member of the majority party, who is chosen to preside over the Senate in the absence of the vice president.
Also, president pro tem .
U.S. Govt.
a senator, usually a senior member of the majority party, who is chosen to preside over the Senate in the absence of the vice president.
Also, president pro tem .
Random House Webster's Unabridged English dictionary. Полный английский словарь Вебстер - Random House . 2012