transistor
/tærnˈzɪstə(r), -ˈsɪst-; træn`zɪstɚ, -`sɪst-/ n
1 small electronic device used in radios, televisions, etc for controlling an electrical signal as it passes along a circuit 晶体管.
2 (also ,transistor `radio) portable radio with transistors 晶体管收音机.