semiautomatic /ˌsɛmiˌɑːtəˈmætɪk/ adjective /ˌsɛmiˌɑːtəˈmætɪk/
adjective
Learner's definition of SEMIAUTOMATIC
of a gun
: able to fire bullets one after the other quickly but not automatically（枪）半自动的
— semiautomatic
noun, plural semiautomatics [count]