transistor
noun [ C ] uk/trænˈzɪs.tər/ us/trænˈzɪs.tɚ/
晶体管
a small electrical device containing a semiconductor, used in televisions, radios, etc. to control or increase an electric current
(also transistor radio); (informal trannie)（尤指旧时的）晶体管收音机
a small radio containing transistors, used especially in the past