Zen (, Middle Chinese: ) is a school of Mahayana Buddhism that originated in China during the Tang dynasty as Chán. It was strongly influenced by Taoism, and developed as a distinguished Chinese style of Buddhism. From China, Chán spread south to Vietnam, northeast to Korea and east to Japan, where it became known as Japanese Zen.

Zen is a school of Mahayana Buddhism notable for its emphasis on practice and experiential wisdom.

Zen+ is the codename for AMD's eventual Zen successor. Zen+ is expected to bring a slight increase in instructions per clock over Zen, but not nearly as large as the jump from Excavator to Zen.