anabolic steroid
noun /ˌænəbɒlɪk ˈsterɔɪd/, /ˌænəbɒlɪk ˈstɪərɔɪd/
/ˌænəbɑːlɪk ˈsterɔɪd/, /ˌænəbɑːlɪk ˈstɪrɔɪd/
- an artificial hormone (= a chemical substance) that increases the size of the muscles. It is sometimes taken illegally by people who play sports. see also steroid