*SET-U

English word origin

Etymology of lunar

From Middle English lunar (“shaped like the crescent moon”), from Latin lūnāris (“of or pertaining to the moon, lunar”) (possibly through Middle French lunaire (modern French lunaire (“lunar”)), from lūna (“the Moon; cre

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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 ↗
adj

Of, pertaining to, or resembling the Moon (that is, Luna, the Earth's moon). · Shaped like a crescent moon; lunate. · Extremely high. · (Believed to be) influenced by the Moon, as in character, growth, or properties.

noun

The middle bone of the proximal series of the carpus in the wrist, which is shaped like a half-moon. · An observation of a lunar distance (“the angle between the Moon and another celestial body”), especially for establishing the longitude of a ship at sea.

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

From Middle English lunar (“shaped like the crescent moon”), from Latin lūnāris (“of or pertaining to the moon, lunar”) (possibly through Middle French lunaire (modern French lunaire (“lunar”)), from lūna (“the Moon; crescent shape”) (ultimately from Proto-Indo-European *lewk- (“bright; to shine”)) + -is (suffix forming adjectives).

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": "root",
      "args": {
        "1": "en",
        "2": "ine-pro",
        "3": "*lewk-"
      },
      "expansion": ""
    },
    {
      "name": "inh",
      "args": {
        "1": "en",
        "2": "enm",
        "3": "lunar",
        "4": "",
        "5": "shaped like the crescent moon"
      },
      "expansion": "Middle English lunar (“shaped like the crescent moon”)"
    },
    {
      "name": "der",
      "args": {
        "1": "en",
        "2": "la",
        "3": "lūnāris",
        "4": "",
        "5": "of or pertaining to the moon, lunar"
      },
      "expansion": "Latin lūnāris (“of or pertaining to the moon, lunar”)"
    },
    {
      "name": "der",
      "args": {
        "1": "en",
        "2": "frm",
        "3": "lunaire"
      },
      "expansion": "Middle French lunaire"
    },
    {
      "name": "cog",
      "args": {
        "1": "fr",
        "2": "lunaire",
        "3": "",
        "4": "lunar"
      },
      "expansion": "French lunaire (“lunar”)"
    },
    {
      "name": "der",
      "args": {
        "1": "en",
        "2": "ine-pro",
        "3": "*lewk-",
        "4": "",
        "5": "bright; to shine"
      },
      "expansion": "Proto-Indo-European *lewk- (“bright; to shine”)"
    },
    {
      "name": "glossary",
      "args": {
        "1": "adjective"
      },
      "expansion": "adjective"
    }
  ],
  "links": [
    [
      "lunar",
      "lunar#Middle_English"
    ],
    [
      "lūnāris",
      "lunaris#Latin"
    ],
    [
      "lunaire",
      "lunaire#Middle_French"
    ],
    [
      "lunaire",
      "lunaire#French"
    ],
    [
      "lūna",
      "luna#Latin"
    ],
    [
      "*lewk-",
      "Reconstruction:Proto-Indo-European/lewk-"
    ],
    [
      "-is",
      "-is#Latin"
    ]
  ],
  "references": [],
  "descendants": [],
  "lexical": [
    {
      "pos": "adj",
      "glosses": [
        "Of, pertaining to, or resembling the Moon (that is, Luna, the Earth's moon).",
        "Shaped like a crescent moon; lunate.",
        "Extremely high.",
        "(Believed to be) influenced by the Moon, as in character, growth, or properties."
      ],
      "tags": [
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      "sourceRecordOrdinal": 122877
    },
    {
      "pos": "noun",
      "glosses": [
        "The middle bone of the proximal series of the carpus in the wrist, which is shaped like a half-moon.",
        "An observation of a lunar distance (“the angle between the Moon and another celestial body”), especially for establishing the longitude of a ship at sea."
      ],
      "tags": [],
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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 lunar →

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-bHVuYXI