also: かいてんすし
conveyor belt sushi; sushi-go-round; kaiten-zushi
A style of sushi restaurant where plates of sushi circulate on a conveyor belt; diners pick what they want. The term is widely understood and used in everyday Japanese.
We went to a conveyor belt sushi restaurant as a family on the weekend.
That kaiten-zushi place starts at 100 yen per plate.