Definition of pentode in English:


Line breaks: pen|tode
Pronunciation: /ˈpɛntəʊd


A thermionic valve having five electrodes.
More example sentences
  • The machine incorporates a pentode vacuum-tube driven as a cathode follower in a Class-A, unity-gain output stage.
  • Here is a compilation of some of the finest pentode audio tubes ever made.
  • I agree with the assumption that building large pentodes is more difficult.


early 20th century: from Greek pente 'five' + hodos 'way'.

Definition of pentode in:

Get more from Oxford Dictionaries

Subscribe to remove adverts and access premium resources

Word of the day demoralize
Pronunciation: dɪˈmɒrəlʌɪz
cause (someone) to lose confidence or hope