*SET-U

English word origin

Etymology of ohm

Named after Bavarian physicist Georg Ohm. A German surname, first recorded in the 12th century, from German Ohm (“uncle”), from Proto-West Germanic *auhaim (“maternal uncle”), from or related to Proto-Germanic *awô (“gra

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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

In the International System of Units, the derived unit of electrical resistance; the electrical resistance of a device across which a potential difference of one volt causes a current of one ampere.

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

Named after Bavarian physicist Georg Ohm. A German surname, first recorded in the 12th century, from German Ohm (“uncle”), from Proto-West Germanic *auhaim (“maternal uncle”), from or related to Proto-Germanic *awô (“grandfather, paternal uncle”) + *haimaz (“home”). Doublet of oom and of dialectal eam (“uncle”).

Relationships mentioned by the source

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

  • Cognate mentionOhmde
  • Derivation mention*auhaimgmw-pro
  • Derivation mention*awôgem-pro · grandfather, paternal uncle
Inspect preserved source fields

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

{
  "templates": [
    {
      "name": "yesno",
      "args": {
        "1": "",
        "2": "n",
        "3": "N"
      },
      "expansion": "N"
    },
    {
      "name": "named-after/list",
      "args": {
        "1": "physicist",
        "2": "",
        "3": "",
        "4": "",
        "5": ""
      },
      "expansion": "physicist"
    },
    {
      "name": "!",
      "args": {},
      "expansion": "|"
    },
    {
      "name": "lang",
      "args": {
        "1": "en",
        "2": "Georg Ohm"
      },
      "expansion": "Georg Ohm"
    },
    {
      "name": "named-after",
      "args": {
        "1": "en",
        "2": "Georg Ohm",
        "nationality": "Bavarian",
        "occupation": "physicist",
        "wplink": "Georg Ohm"
      },
      "expansion": "Named after Bavarian physicist Georg Ohm"
    },
    {
      "name": "der",
      "args": {
        "1": "en",
        "2": "de",
        "3": "-"
      },
      "expansion": "German"
    },
    {
      "name": "cog",
      "args": {
        "1": "de",
        "2": "Ohm",
        "3": "",
        "4": "uncle"
      },
      "expansion": "German Ohm (“uncle”)"
    },
    {
      "name": "der",
      "args": {
        "1": "en",
        "2": "gmw-pro",
        "3": "*auhaim",
        "4": "",
        "5": "maternal uncle"
      },
      "expansion": "Proto-West Germanic *auhaim (“maternal uncle”)"
    },
    {
      "name": "der",
      "args": {
        "1": "en",
        "2": "gem-pro",
        "3": "*awô",
        "t": "grandfather, paternal uncle"
      },
      "expansion": "Proto-Germanic *awô (“grandfather, paternal uncle”)"
    },
    {
      "name": "dbt",
      "args": {
        "1": "en",
        "2": "oom"
      },
      "expansion": "Doublet of oom"
    }
  ],
  "links": [
    [
      "Ohm",
      "Ohm#German"
    ],
    [
      "*auhaim",
      "Reconstruction:Proto-West Germanic/auhaim"
    ],
    [
      "*awô",
      "Reconstruction:Proto-Germanic/awô"
    ],
    [
      "*haimaz",
      "Reconstruction:Proto-Germanic/haimaz"
    ],
    [
      "home",
      "home"
    ],
    [
      "oom",
      "oom#English"
    ],
    [
      "eam",
      "eam#English"
    ]
  ],
  "references": [],
  "descendants": [],
  "lexical": [
    {
      "pos": "noun",
      "glosses": [
        "In the International System of Units, the derived unit of electrical resistance; the electrical resistance of a device across which a potential difference of one volt causes a current of one ampere."
      ],
      "tags": [],
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      "rawRecordSha256": "d11d5be5909d5f70602987eaacd4cb85fc875f518c064c984efd1acb3b88f236",
      "sourceRecordOrdinal": 154436
    }
  ],
  "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 ohm →

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-b2ht