Definitions:

1. to cause be distributed verb
   • The head of department circulated the letter among the employees.
2. to cause to become widely known verb
   • The rumours circulated through the school.
3. to cause to move around verb
   • The rumor circulated for a few weeks before the facts came out and put it to bed.
4. to cause to move in a circuit or system verb
   • The fan circulates the air in the room.
5. to move around freely verb
   • They circulate among royalty.
6. to move through a space, circuit or system, returning to the starting point verb
   • Blood circulates in my veins.

Synonyms:

• circle
• diffuse
• distribute
• mobilise
• mobilize
• pass around
• pass on
• spread