Jump to word: 

Phrases starting with the letter: A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

Previous word: thermion
Next word: thermionics

Definition of: thermionic tube

A vacuum tube emitting thermions from a heated electrode. Also Brit. thermionic valve.

Phrases starting with the letter: A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

User Contributions:

Comment about this word, ask questions, or add new information about this topic: