transistor
🇺🇸
/trænˈzɪstər/
🇬🇧
/trænˈzɪstə(r)/
A small electronic part that controls electric current in devices like computers and radios.
The transistor in this radio helps control the flow of electricity to make sound.
A small radio that uses transistors instead of tubes.
My grandfather's old transistor still works perfectly after all these years.