*SET-U

English word origin

Etymology of allo-

Etymology tree Proto-Indo-European *h₂el-der. Proto-Indo-European *h₂élyos Proto-Hellenic *ál͏̌l͏̌os Ancient Greek ᾰ̓́λλος (ắllos)der. English allo- From Ancient Greek ἀλλο- (allo-), combining form of ἄλλος (állos, “othe

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 ↗
prefix

Nonself; nonself but of the same species. · Alloimmunity; (biology, medicine, transplantation) transplantation of cells or tissues from one person to another. · An arbitrary member of a heterogenous-but-interrelated group. · External, outside, or from a separate location.

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

Etymology tree Proto-Indo-European *h₂el-der. Proto-Indo-European *h₂élyos Proto-Hellenic *ál͏̌l͏̌os Ancient Greek ᾰ̓́λλος (ắllos)der. English allo- From Ancient Greek ἀλλο- (allo-), combining form of ἄλλος (állos, “other”), from Proto-Hellenic *ál͏̌l͏̌os, from Proto-Indo-European *h₂élyos. Doublet of else (the inherited Germanic word) and alias (borrowed from Latin).

Relationships mentioned by the source

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

This page abbreviates 13 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": "etymon",
      "args": {
        "1": "en",
        "2": ":der",
        "3": "grc:ᾰ̓́λλος",
        "tree": "1"
      },
      "expansion": "Etymology tree\nProto-Indo-European *h₂el-der.\nProto-Indo-European *h₂élyos\nProto-Hellenic *ál͏̌l͏̌os\nAncient Greek ᾰ̓́λλος (ắllos)der.\nEnglish allo-\n[Appendix:Glossary#derived_terms|Derived]] from\", \"terms\" : [ { \"children\" : [ { \"terms\" : [ { \"id\" : \"other\", \"children\" : [ { \"terms\" : [ { \"id\" : \"other\", \"children\" : [ { \"keyword_abbrev\" : \"der.\", \"keyword_label\" : \"Derived from\", \"terms\" : [ { \"id\" : \"other\", \"children\" : [ ], \"status\" : \"ok\", \"lang_name\" : \"Proto-Indo-European\", \"term\" : \"*h₂el-\", \"lang\" : \"ine-pro\" } ], \"keyword\" : \"derived\" } ], \"status\" : \"ok\", \"lang_name\" : \"Proto-Indo-European\", \"term\" : \"*h₂élyos\", \"lang\" : \"ine-pro\" } ], \"keyword_label\" : \"Inherited from\", \"keyword\" : \"inherited\" } ], \"status\" : \"ok\", \"lang_name\" : \"Proto-Hellenic\", \"term\" : \"*áľľos\", \"lang\" : \"grk-pro\" } ], \"keyword_label\" : \"Inherited from\", \"keyword\" : \"inherited\" } ], \"lang_name\" : \"Ancient Greek\", \"term\" : \"ᾰ̓́λλος\", \"status\" : \"ok\", \"lang\" : \"grc\" } ], \"keyword\" : \"derived\" } ], \"lang_name\" : \"English\", \"term\" : \"allo-\", \"status\" : \"ok\", \"lang\" : \"en\" }\" data-lang=\"en\" data-title=\"allo-\">"
    },
    {
      "name": "der",
      "args": {
        "1": "en",
        "2": "grc",
        "3": "ἀλλο-"
      },
      "expansion": "Ancient Greek ἀλλο- (allo-)"
    },
    {
      "name": "der",
      "args": {
        "1": "en",
        "2": "grk-pro",
        "3": "*áľľos"
      },
      "expansion": "Proto-Hellenic *ál͏̌l͏̌os"
    },
    {
      "name": "der",
      "args": {
        "1": "en",
        "2": "ine-pro",
        "3": "*h₂élyos"
      },
      "expansion": "Proto-Indo-European *h₂élyos"
    },
    {
      "name": "dbt",
      "args": {
        "1": "en",
        "2": "else<ng:the inherited Germanic word>",
        "3": "alias<ng:borrowed from Latin>"
      },
      "expansion": "Doublet of else (the inherited Germanic word) and alias (borrowed from Latin)"
    },
    {
      "name": "etymon",
      "args": {
        "1": "en",
        "2": ":der",
        "3": "grc:ᾰ̓́λλος",
        "tree": "1"
      },
      "expansion": "Etymology tree\nProto-Indo-European *h₂el-der.\nProto-Indo-European *h₂élyos\nProto-Hellenic *ál͏̌l͏̌os\nAncient Greek ᾰ̓́λλος (ắllos)der.\nEnglish allo-"
    }
  ],
  "links": [
    [
      "*h₂el-",
      "Reconstruction:Proto-Indo-European/h₂el-#Proto-Indo-European:_other"
    ],
    [
      "*h₂élyos",
      "Reconstruction:Proto-Indo-European/h₂élyos#Proto-Indo-European:_other"
    ],
    [
      "*ál͏̌l͏̌os",
      "Reconstruction:Proto-Hellenic/ál͏̌l͏̌os#Proto-Hellenic:_other"
    ],
    [
      "ᾰ̓́λλος",
      "ἄλλος#Ancient_Greek"
    ],
    [
      "ἀλλο-",
      "ἀλλο-#Ancient_Greek"
    ],
    [
      "ἄλλος",
      "ἄλλος#Ancient_Greek"
    ],
    [
      "*ál͏̌l͏̌os",
      "Reconstruction:Proto-Hellenic/ál͏̌l͏̌os"
    ],
    [
      "*h₂élyos",
      "Reconstruction:Proto-Indo-European/h₂élyos"
    ],
    [
      "else",
      "else#English"
    ],
    [
      "alias",
      "alias#English"
    ]
  ],
  "references": [],
  "descendants": [],
  "lexical": [
    {
      "pos": "prefix",
      "glosses": [
        "Nonself; nonself but of the same species.",
        "Alloimmunity; (biology, medicine, transplantation) transplantation of cells or tissues from one person to another.",
        "An arbitrary member of a heterogenous-but-interrelated group.",
        "External, outside, or from a separate location."
      ],
      "tags": [
        "morpheme"
      ],
      "recordId": "aa700229ab66b420346253159d8372cca962480003322309f1961b60abb3eadb",
      "rawRecordSha256": "27d8c0a9214a7acc46fa8ad94a2be39ff115c9b6c55a2fc11cd1c24cf589f005",
      "sourceRecordOrdinal": 494164
    }
  ],
  "omittedAuxiliaryFields": {
    "templates": 0,
    "links": 0,
    "references": 0,
    "descendants": 0,
    "lexicalRecords": 0,
    "lexicalSenses": 13,
    "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 allo- →

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-YWxsby0