Later emperors used them to announce royal or senatorial decrees and events of the court.

All you and your toadies passed was a senatorial decree which has no validity in law nor any, even the most transient, relevance to the constitution!

The proper term for a senatorial decree.

Camillus was assigned the Volscian war by special senatorial decree.

"The Senate decides whether a cult is legal or illegal at Rome, and I know of no senatorial decrees on this matter."

Sulla in 81 B.C. gave these senatorial decrees the formal status of laws.

Calling them "suffect" dispensed with the need for an election; a senatorial decree was enough.

In order to become law, a senatorial decree had to be passed by an Assembly, and sometimes it was rejected.

I'm writing to everyone I know in Rome to get that senatorial decree lifted!

Nothing else for it than to take the matter to the People without that elusive senatorial decree.