Standard Lemma guide

diode

noun · 3 senses · updated from the 2026-07-25 local source snapshot

Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.

Sound

Pronunciation

Each Play button uses your device's default local English voice, or a natural local fallback. The selected voice name appears after playback. This is synthesized speech, not a source recording.

  • Received-Pronunciation: /ˈdaɪ.əʊd/
  • General-American: /ˈdaɪ.oʊd/
  • US: Recorded audio is listed in the source snapshot.
  • rhymes with -aɪəʊd
  • CMU ARPABET: D AY1 OW2 D Digits mark lexical stress: 1 primary, 2 secondary, 0 unstressed.

1

noun

Meaning 1

An electronic device that allows current to flow in one direction only; used chiefly as a rectifier.

Definition source: English Wiktionary via Wiktextract

Topics: business, electrical-engineering, electricity, electromagnetism, electronics, energy, engineering, natural-sciences, physical-sciences, physics

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

2

noun

Meaning 2

a semiconductor that consists of a p-n junction

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: semiconductor diode, junction rectifier, crystal rectifier

Antonyms: none provided

Broader terms: semiconductor device, semiconductor unit, semiconductor

Narrower terms: light-emitting diode, LED

3

noun

Meaning 3

a thermionic tube having two electrodes; used as a rectifier

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: rectifying tube, rectifying valve

Antonyms: none provided

Broader terms: tube, vacuum tube, thermionic vacuum tube, thermionic tube, electron tube, thermionic valve

History

Etymology

From di- (“two”) + -ode. Learned formation, coined by William Henry Eccles in 1919, after Ancient Greek δίοδος (díodos, “passage through”), which however is formed not with δι- (di-, “two”) but with δια- (dia-, “through”).

Across languages

Translations

51 source translations are retained for this English entry.

  • Arabic: صِمَام ثُنَائِيّ (ṣimām ṯunāʔiyy) — electronic device
  • Arabic: ثَنَائِي دِيُود (ṯanāʔī diyūd) — electronic device
  • Armenian: դիոդ (diod) — electronic device
  • Basque: diodo — electronic device
  • Catalan: díode — electronic device
  • Chinese Mandarin: 二極管 /二极管 (èrjíguǎn) — electronic device
  • Chinese Mandarin: 二極體 /二极体 (èrjítǐ) — electronic device
  • Czech: dioda — electronic device
  • Danish: diode — electronic device
  • Dutch: diode — electronic device
  • Esperanto: diodo — electronic device
  • Finnish: diodi — electronic device
  • French: diode — electronic device
  • Galician: díodo — electronic device
  • German: Diode — electronic device
  • Greek: δίοδος (díodos) — electronic device
  • Hebrew: דיודה (dioda) — electronic device
  • Hindi: डायोड (ḍāyoḍ) — electronic device
  • Hungarian: dióda — electronic device
  • Icelandic: díóða — electronic device
  • Icelandic: tvistur — electronic device
  • Icelandic: tvískauta rör — electronic device
  • Icelandic: tvískauti — electronic device
  • Indonesian: diode — electronic device
  • Italian: diodo — electronic device
  • Japanese: ダイオード (daiōdo) — electronic device
  • Korean: 다이오드 (daiodeu) — electronic device
  • Macedonian: дио́да (dióda) — electronic device
  • Malay: diod — electronic device
  • Māori: ngōhiko — electronic device
  • Māori: whāhutahi — electronic device
  • Norwegian Bokmål: diode — electronic device
  • Norwegian Nynorsk: diode — electronic device
  • Persian: دیود (diyod) — electronic device
  • Polish: dioda — electronic device
  • Portuguese: díodo — electronic device
  • Romanian: diodă — electronic device
  • Russian: дио́д (diód) — electronic device
  • Serbo-Croatian: дио́да — electronic device
  • Serbo-Croatian: dióda — electronic device
  • Spanish: diodo — electronic device
  • Swedish: diod — electronic device
  • Tagalog: duhandas — electronic device
  • Tagalog: diyodo — electronic device
  • Thai: ไดโอด (daiòht) — electronic device
  • Turkish: diyot — electronic device
  • Vietnamese: ống hai cực — electronic device
  • Vietnamese: bóng lưỡng cực — electronic device
  • Vietnamese: đèn lưỡng cực — electronic device
  • Vietnamese: điôt — electronic device
  • Welsh: deuod — electronic device
Real reading context

diode in complete knowledge articles