*SET-U

English word origin

Etymology of third

PIE word *tréyes From Middle English thirde, thridde, from Old English þridda, from Proto-Germanic *þridjô, from Pre-Germanic *tretyós, a remodeling of Proto-Indo-European *tr̥tyós.

1 source sectionExtended source reportWiktionary original ↗
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 ↗
verb

To agree with a proposition or statement after it has already been seconded. · To divide into three equal parts.

adj

The ordinal form of the cardinal number three; Coming after the second.

noun

The person or thing in the third position. · One of three equal parts of a whole. · Ellipsis of third gear (of a gearbox). · An interval consisting of the first and third notes in a scale.

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

PIE word *tréyes From Middle English thirde, thridde, from Old English þridda, from Proto-Germanic *þridjô, from Pre-Germanic *tretyós, a remodeling of Proto-Indo-European *tr̥tyós.

Relationships mentioned by the source

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

This page abbreviates 4 auxiliary source items. The etymology narrative is not shortened. Omission counts are available in the audit fields below; consult the original for complete auxiliary material.

Inspect preserved source fields

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

{
  "templates": [
    {
      "name": "dercat",
      "args": {
        "1": "en",
        "2": "ine-pro"
      },
      "expansion": ""
    },
    {
      "name": "langname",
      "args": {
        "1": "ine-pro"
      },
      "expansion": "Proto-Indo-European"
    },
    {
      "name": "word",
      "args": {
        "1": "en",
        "2": "ine",
        "3": "tréyes",
        "id": ""
      },
      "expansion": ""
    },
    {
      "name": "PIE word",
      "args": {
        "1": "en",
        "2": "tréyes"
      },
      "expansion": "PIE word\n *tréyes"
    },
    {
      "name": "inh",
      "args": {
        "1": "en",
        "2": "enm",
        "3": "thirde"
      },
      "expansion": "Middle English thirde"
    },
    {
      "name": "inh",
      "args": {
        "1": "en",
        "2": "ang",
        "3": "þridda"
      },
      "expansion": "Old English þridda"
    },
    {
      "name": "inh",
      "args": {
        "1": "en",
        "2": "gem-pro",
        "3": "*þridjô"
      },
      "expansion": "Proto-Germanic *þridjô"
    },
    {
      "name": "inh",
      "args": {
        "1": "en",
        "2": "ine-pro",
        "3": "*tr̥tyós"
      },
      "expansion": "Proto-Indo-European *tr̥tyós"
    }
  ],
  "links": [
    [
      "*tréyes",
      "Reconstruction:Proto-Indo-European/tréyes"
    ],
    [
      "thirde",
      "thirde#Middle_English"
    ],
    [
      "thridde",
      "thridde#Middle_English"
    ],
    [
      "þridda",
      "þridda#Old_English"
    ],
    [
      "*þridjô",
      "Reconstruction:Proto-Germanic/þridjô"
    ],
    [
      "*tr̥tyós",
      "Reconstruction:Proto-Indo-European/tr̥tyós"
    ]
  ],
  "references": [],
  "descendants": [],
  "lexical": [
    {
      "pos": "verb",
      "glosses": [
        "To agree with a proposition or statement after it has already been seconded.",
        "To divide into three equal parts."
      ],
      "tags": [
        "informal"
      ],
      "recordId": "7195ef55fd2d87b5a6ed4c0ecbe589de4b2e1c259eb77e34d1268c5b0ff66245",
      "rawRecordSha256": "d14f3dcb53a24b0cc79df568ef85132f3a0e08e5a1ef26fc5dbf67dc5adb9164",
      "sourceRecordOrdinal": 13785
    },
    {
      "pos": "adj",
      "glosses": [
        "The ordinal form of the cardinal number three; Coming after the second."
      ],
      "tags": [
        "not-comparable"
      ],
      "recordId": "7d04c3c7036420741c5a72c96f6110eea06b386871cbaf5c3fa900b81fd027bb",
      "rawRecordSha256": "b5350e1fdb93112dc8ccd94005b18ae040df0c6629390f648a4573e6d70684d7",
      "sourceRecordOrdinal": 13783
    },
    {
      "pos": "noun",
      "glosses": [
        "The person or thing in the third position.",
        "One of three equal parts of a whole.",
        "Ellipsis of third gear (of a gearbox).",
        "An interval consisting of the first and third notes in a scale."
      ],
      "tags": [
        "countable",
        "uncountable",
        "abbreviation",
        "alt-of",
        "ellipsis"
      ],
      "recordId": "d51be19389e22a363111aca35600e47152667e3b3b604a07ce461bf51fc54a3b",
      "rawRecordSha256": "6fcde367bfb35c040695df7e74758fb90526eb169f701e54d134a3009ccad666",
      "sourceRecordOrdinal": 13784
    }
  ],
  "omittedAuxiliaryFields": {
    "templates": 0,
    "links": 0,
    "references": 0,
    "descendants": 0,
    "lexicalRecords": 0,
    "lexicalSenses": 4,
    "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 third →

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-dGhpcmQ