*SET-U

English word origin

Etymology of Leo

From Latin leō (“lion”), calque of Ancient Greek λέων (léōn), calque of Akkadian 𒉈𒍑 (nēšu)/Akkadian 𒌨𒄞𒆷 (urgulû), from Sumerian 𒌨𒄞𒆷 (UR.GU.LA, “lion; name of constellation”). Doublet of Leon, leu, lev, lion, and

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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

Someone with a Leo star sign · A Leonberger

name

A male given name from Latin, borne by numerous saints and 14 popes. · A constellation of the zodiac, traditionally figured in the shape of a lion and containing the stars Regulus and Denebola. · The zodiac sign for the Lion, ruled by the Sun and covering July 23 - August 22 (tropical astrology) or August 16 - September 15 (sidereal astrology). · A surname.

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

From Latin leō (“lion”), calque of Ancient Greek λέων (léōn), calque of Akkadian 𒉈𒍑 (nēšu)/Akkadian 𒌨𒄞𒆷 (urgulû), from Sumerian 𒌨𒄞𒆷 (UR.GU.LA, “lion; name of constellation”). Doublet of Leon, leu, lev, lion, and Lyon.

Relationships mentioned by the source

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

This page abbreviates 2 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": "der",
      "args": {
        "1": "en",
        "2": "la",
        "3": "leō",
        "4": "",
        "5": "lion"
      },
      "expansion": "Latin leō (“lion”)"
    },
    {
      "name": "calque",
      "args": {
        "1": "la",
        "2": "grc",
        "3": "λέων",
        "nocap": "1",
        "nocat": "1"
      },
      "expansion": "calque of Ancient Greek λέων (léōn)"
    },
    {
      "name": "calque",
      "args": {
        "1": "grc",
        "2": "akk",
        "3": "𒉈𒍑",
        "4": "",
        "5": "",
        "tr": "nēšu",
        "nocap": "1",
        "nocat": "1"
      },
      "expansion": "calque of Akkadian 𒉈𒍑 (nēšu)"
    },
    {
      "name": "calque",
      "args": {
        "1": "grc",
        "2": "akk",
        "3": "𒌨𒄞𒆷",
        "4": "",
        "5": "",
        "tr": "urgulû",
        "nocap": "1",
        "nocat": "1",
        "notext": "1"
      },
      "expansion": "Akkadian 𒌨𒄞𒆷 (urgulû)"
    },
    {
      "name": "der",
      "args": {
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        "2": "sux",
        "3": "𒌨𒄞𒆷",
        "4": "",
        "5": "lion; name of constellation",
        "tr": "UR.GU.LA"
      },
      "expansion": "Sumerian 𒌨𒄞𒆷 (UR.GU.LA, “lion; name of constellation”)"
    },
    {
      "name": "doublet",
      "args": {
        "1": "en",
        "2": "Leon",
        "3": "leu",
        "4": "lev",
        "5": "lion",
        "6": "Lyon"
      },
      "expansion": "Doublet of Leon, leu, lev, lion, and Lyon"
    }
  ],
  "links": [
    [
      "leō",
      "leo#Latin"
    ],
    [
      "λέων",
      "λέων#Ancient_Greek"
    ],
    [
      "𒉈𒍑",
      "𒉈𒍑#Akkadian"
    ],
    [
      "𒌨𒄞𒆷",
      "𒌨𒄞𒆷#Akkadian"
    ],
    [
      "𒌨𒄞𒆷",
      "𒌨𒄞𒆷#Sumerian"
    ],
    [
      "Leon",
      "Leon#English"
    ],
    [
      "leu",
      "leu#English"
    ],
    [
      "lev",
      "lev#English"
    ],
    [
      "lion",
      "lion#English"
    ],
    [
      "Lyon",
      "Lyon#English"
    ]
  ],
  "references": [],
  "descendants": [],
  "lexical": [
    {
      "pos": "noun",
      "glosses": [
        "Someone with a Leo star sign",
        "A Leonberger"
      ],
      "tags": [],
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      "glosses": [
        "A male given name from Latin, borne by numerous saints and 14 popes.",
        "A constellation of the zodiac, traditionally figured in the shape of a lion and containing the stars Regulus and Denebola.",
        "The zodiac sign for the Lion, ruled by the Sun and covering July 23 - August 22 (tropical astrology) or August 16 - September 15 (sidereal astrology).",
        "A surname."
      ],
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  ],
  "omittedAuxiliaryFields": {
    "templates": 0,
    "links": 0,
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    "descendants": 0,
    "lexicalRecords": 0,
    "lexicalSenses": 2,
    "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 Leo →

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-TGVv