president pro tempore(redirected from presidents pro tempore)
president pro tem·po·re(tĕm′pə-rē)
n. pl. presidents pro tempore
The senator who presides over the US Senate in the absence of the vice president.
pres′ident pro tem′pore
a senator, usu. a senior member of the majority party, who is chosen to preside over the Senate in the absence of the vice president.Also called pres′ident pro tem′.