*SET-U

English word origin

Etymology of endo-

Etymology tree Proto-Indo-European *h₁n̥dóm Proto-Hellenic *éndon Ancient Greek ἔνδον (éndon)der. English endo- From Ancient Greek ἔνδον (éndon, “inner; internal”).

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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 ↗
prefix

Alternative form of end-.

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

Etymology tree Proto-Indo-European *h₁n̥dóm Proto-Hellenic *éndon Ancient Greek ἔνδον (éndon)der. English endo- From Ancient Greek ἔνδον (éndon, “inner; internal”).

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": "etymon",
      "args": {
        "1": "en",
        "2": ":der",
        "3": "grc:ἔνδον",
        "tree": "1"
      },
      "expansion": "Etymology tree\nProto-Indo-European *h₁n̥dóm\nProto-Hellenic *éndon\nAncient Greek ἔνδον (éndon)der.\nEnglish endo-\n[Appendix:Glossary#derived_terms|Derived]] from\", \"terms\" : [ { \"children\" : [ { \"terms\" : [ { \"children\" : [ { \"terms\" : [ { \"children\" : [ ], \"lang_name\" : \"Proto-Indo-European\", \"term\" : \"*h₁n̥dóm\", \"status\" : \"missing\", \"lang\" : \"ine-pro\" } ], \"keyword_label\" : \"Inherited from\", \"keyword\" : \"inherited\" } ], \"lang_name\" : \"Proto-Hellenic\", \"term\" : \"*éndon\", \"status\" : \"inline\", \"lang\" : \"grk-pro\" } ], \"keyword_label\" : \"Inherited from\", \"keyword\" : \"inherited\" } ], \"lang_name\" : \"Ancient Greek\", \"term\" : \"ἔνδον\", \"status\" : \"ok\", \"lang\" : \"grc\" } ], \"keyword\" : \"derived\" } ], \"lang_name\" : \"English\", \"term\" : \"endo-\", \"status\" : \"ok\", \"lang\" : \"en\" }\" data-lang=\"en\" data-title=\"endo-\">"
    },
    {
      "name": "der",
      "args": {
        "1": "en",
        "2": "grc",
        "3": "ἔνδον",
        "t": "inner; internal"
      },
      "expansion": "Ancient Greek ἔνδον (éndon, “inner; internal”)"
    },
    {
      "name": "etymon",
      "args": {
        "1": "en",
        "2": ":der",
        "3": "grc:ἔνδον",
        "tree": "1"
      },
      "expansion": "Etymology tree\nProto-Indo-European *h₁n̥dóm\nProto-Hellenic *éndon\nAncient Greek ἔνδον (éndon)der.\nEnglish endo-"
    }
  ],
  "links": [
    [
      "*h₁n̥dóm",
      "Reconstruction:Proto-Indo-European/h₁n̥dóm"
    ],
    [
      "*éndon",
      "Reconstruction:Proto-Hellenic/éndon"
    ],
    [
      "ἔνδον",
      "ἔνδον#Ancient_Greek"
    ],
    [
      "ἔνδον",
      "ἔνδον#Ancient_Greek"
    ]
  ],
  "references": [],
  "descendants": [],
  "lexical": [
    {
      "pos": "prefix",
      "glosses": [
        "Alternative form of end-."
      ],
      "tags": [
        "alt-of",
        "alternative",
        "morpheme"
      ],
      "recordId": "ba5915ff149a4595d283b76055cf47d03f555684f3a1731125db860f0d022346",
      "rawRecordSha256": "44406cd004737ec1a5c7a11f5494492a50ede454d16863f8133f1d9e4746a8a2",
      "sourceRecordOrdinal": 186799
    }
  ],
  "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 endo- →

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-ZW5kby0