*SET-U

English word origin

Etymology of diode

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”

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In this entry · 1 source sections

The source etymologies

Wiktionary via Kaikki / Wiktextract

The source reports below are imported and unreviewed by *SET-U. Separate numbered origins and differing source variants are preserved; agreement within this extraction is not independent corroboration.

Unnumbered source etymology

Original entry ↗
noun

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

Selected source glosses provide context, not a complete modern definition inventory

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”).

Relationships mentioned by the source

These are extracted mentions, not a timeline or a verified sequence of immediate parents.

Inspect preserved source fields

Raw extraction fields are retained for auditing. Their order does not establish ancestry.

{
  "templates": [
    {
      "name": "confix",
      "args": {
        "1": "en",
        "2": "di",
        "3": "ode",
        "id1": "two",
        "t1": "two"
      },
      "expansion": "di- (“two”) + -ode"
    },
    {
      "name": "der",
      "args": {
        "1": "en",
        "2": "grc",
        "3": "δίοδος",
        "t": "passage through"
      },
      "expansion": "Ancient Greek δίοδος (díodos, “passage through”)"
    }
  ],
  "links": [
    [
      "di-",
      "di-#English:_two"
    ],
    [
      "-ode",
      "-ode#English"
    ],
    [
      "δίοδος",
      "δίοδος#Ancient_Greek"
    ],
    [
      "δι-",
      "δι-#Ancient_Greek"
    ],
    [
      "δια-",
      "δια-#Ancient_Greek"
    ]
  ],
  "references": [],
  "descendants": [
    {
      "lang": "French",
      "lang_code": "fr",
      "word": "diode",
      "raw_tags": [
        "borrowed"
      ]
    },
    {
      "lang": "Korean",
      "lang_code": "ko",
      "word": "다이오드",
      "raw_tags": [
        "borrowed"
      ],
      "roman": "daiodeu"
    },
    {
      "lang": "Spanish",
      "lang_code": "es",
      "word": "diodo",
      "raw_tags": [
        "borrowed"
      ],
      "descendants": [
        {
          "lang": "Basque",
          "lang_code": "eu",
          "word": "diodo",
          "raw_tags": [
            "borrowed"
          ]
        }
      ]
    },
    {
      "lang": "Welsh",
      "lang_code": "cy",
      "word": "deuod",
      "raw_tags": [
        "borrowed"
      ]
    }
  ],
  "lexical": [
    {
      "pos": "noun",
      "glosses": [
        "An electronic device that allows current to flow in one direction only; used chiefly as a rectifier."
      ],
      "tags": [],
      "recordId": "d149d9971eb9cf732fddb64ddd6c52544ad37bf5d8474bb7e48abcc360d113cf",
      "rawRecordSha256": "356f2516dc69aabfabcd09e0590479ac6d46da47897faa1525d9d377f76c3d55",
      "sourceRecordOrdinal": 229231
    }
  ],
  "omittedAuxiliaryFields": {
    "templates": 0,
    "links": 0,
    "references": 0,
    "descendants": 0,
    "lexicalRecords": 0,
    "lexicalSenses": 0,
    "glosses": 0
  }
}

Where this record stops

This page does not supply an independently verified sound-change sequence, first-use manuscript or complete family tree unless a cited analysis explicitly establishes one. Missing detail here is a limit of this record—not a claim that humanity knows nothing more.

An older meaning does not determine what a word must mean today. Follow the sources, preserve disagreements, and keep ancestry separate from interpretation.

Contribute located evidence for diode →

Source and snapshot

Imported from Wiktionary contributors; extracted by Tatu Ylonen / Wiktextract / Kaikki.org. Selected fields are reformatted and grouped; wording, source identity and etymology sections are retained. CC-BY-SA-4.0 applies to the imported source material.

Dump: 2026-10-01 · Extracted: 2026-10-30. These are snapshot dates, not the word’s first attestation or the page’s revision date.

Source entry and bibliography ↗Wiktionary revision history ↗Acquisition and rights ledger
Machine-source provenance
Source SHA-256
5ff2c072f8099f2d2ce484bd6957bf179f046d2ad37bc36555edf8bb84cb5291
Import run
73216b9a9b78ed3830994bf853103716f5a4dc57099e371e9f8fdc468facca26
Permanent entry ID
w-ZGlvZGU