What is the crossword answer for the clue: Vacuum tube

DIODE - a 5 letter word may be the answer you are looking for!

STRAW - a 5 letter word may be the answer you are looking for!

TRIODE - a 6 letter word may be the answer you are looking for!

TETRODE - a 7 letter word may be the answer you are looking for!

PERMATRON - a 9 letter word may be the answer you are looking for!

AUDION - a 6 letter word may be the answer you are looking for!

DYNATRON - a 8 letter word may be the answer you are looking for!

Vacuum tube

5 Character Answers:

DIODE

STRAW

6 Character Answers:

AUDION

TRIODE

7 Character Answers:

TETRODE

8 Character Answers:

DYNATRON

9 Character Answers:

PERMATRON