*SET-U

English word origin

Etymology of shale

From Middle English schale (“shell, husk; scale”), from Old English sċealu (“shell, husk, pod”), from Proto-West Germanic *skalu, from Proto-Germanic *skalō, from Proto-Indo-European *(s)kelH- (“to split, cut”), from *(s

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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

A shell, scale or husk; a cod or pod. · A fine-grained sedimentary rock of a thin, laminated, and often friable, structure. · The shale oil and shale gas segment of the oil and gas industry.

verb

To take off the shell or coat of.

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

From Middle English schale (“shell, husk; scale”), from Old English sċealu (“shell, husk, pod”), from Proto-West Germanic *skalu, from Proto-Germanic *skalō, from Proto-Indo-European *(s)kelH- (“to split, cut”), from *(s)kel- (“to split, cleave”). See also West Frisian skaal (“dish”), Dutch schaal (“shell”), schalie (“shale”), German Schale (“husk, pod”); also Lithuanian skalà (“splinter”), Old Church Slavonic скала (skala, “rock, stone”), Polish skała (“rock”), Albanian halë (“fish bone, splinter”), Sanskrit कल (kalá, “small part”); also Hittite [script needed] (iškalla, “to tear apart, slit open”), Lithuanian skélti (“to split”), Ancient Greek σκάλλω (skállō, “to hoe, harrow”). Doublet of scale. See also shell.

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.

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  "templates": [
    {
      "name": "inh",
      "args": {
        "1": "en",
        "2": "enm",
        "3": "schale",
        "4": "",
        "5": "shell, husk; scale"
      },
      "expansion": "Middle English schale (“shell, husk; scale”)"
    },
    {
      "name": "inh",
      "args": {
        "1": "en",
        "2": "ang",
        "3": "sċealu",
        "4": "",
        "5": "shell, husk, pod"
      },
      "expansion": "Old English sċealu (“shell, husk, pod”)"
    },
    {
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      },
      "expansion": "Proto-Indo-European *(s)kelH- (“to split, cut”)"
    },
    {
      "name": "cog",
      "args": {
        "1": "fy",
        "2": "skaal",
        "3": "",
        "4": "dish"
      },
      "expansion": "West Frisian skaal (“dish”)"
    },
    {
      "name": "cog",
      "args": {
        "1": "nl",
        "2": "schaal",
        "3": "",
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      },
      "expansion": "Dutch schaal (“shell”)"
    },
    {
      "name": "cog",
      "args": {
        "1": "de",
        "2": "Schale",
        "3": "",
        "4": "husk, pod"
      },
      "expansion": "German Schale (“husk, pod”)"
    },
    {
      "name": "cog",
      "args": {
        "1": "lt",
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        "3": "",
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      },
      "expansion": "Lithuanian skalà (“splinter”)"
    },
    {
      "name": "cog",
      "args": {
        "1": "cu",
        "2": "скала",
        "3": "",
        "4": "rock, stone"
      },
      "expansion": "Old Church Slavonic скала (skala, “rock, stone”)"
    },
    {
      "name": "cog",
      "args": {
        "1": "pl",
        "2": "skała",
        "3": "",
        "4": "rock"
      },
      "expansion": "Polish skała (“rock”)"
    },
    {
      "name": "cog",
      "args": {
        "1": "sq",
        "2": "halë",
        "3": "",
        "4": "fish bone, splinter"
      },
      "expansion": "Albanian halë (“fish bone, splinter”)"
    },
    {
      "name": "cog",
      "args": {
        "1": "sa",
        "2": "कल",
        "3": "",
        "4": "small part",
        "tr": "kalá"
      },
      "expansion": "Sanskrit कल (kalá, “small part”)"
    },
    {
      "name": "cog",
      "args": {
        "1": "hit",
        "tr": "iškalla",
        "t": "to tear apart, slit open"
      },
      "expansion": "Hittite [script needed] (iškalla, “to tear apart, slit open”)"
    },
    {
      "name": "cog",
      "args": {
        "1": "lt",
        "2": "skélti",
        "3": "",
        "4": "to split"
      },
      "expansion": "Lithuanian skélti (“to split”)"
    },
    {
      "name": "cog",
      "args": {
        "1": "grc",
        "2": "σκάλλω",
        "3": "",
        "4": "to hoe, harrow"
      },
      "expansion": "Ancient Greek σκάλλω (skállō, “to hoe, harrow”)"
    },
    {
      "name": "doublet",
      "args": {
        "1": "en",
        "2": "scale"
      },
      "expansion": "Doublet of scale"
    }
  ],
  "links": [
    [
      "schale",
      "schale#Middle_English"
    ],
    [
      "sċealu",
      "scealu#Old_English"
    ],
    [
      "*skalu",
      "Reconstruction:Proto-West Germanic/skalu"
    ],
    [
      "*skalō",
      "Reconstruction:Proto-Germanic/skalō"
    ],
    [
      "*(s)kelH-",
      "Reconstruction:Proto-Indo-European/(s)kelH-"
    ],
    [
      "*(s)kel-",
      "Reconstruction:Proto-Indo-European/(s)kel-"
    ],
    [
      "skaal",
      "skaal#West_Frisian"
    ],
    [
      "schaal",
      "schaal#Dutch"
    ],
    [
      "schalie",
      "schalie#Dutch"
    ],
    [
      "Schale",
      "Schale#German"
    ],
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      "skalà",
      "skala#Lithuanian"
    ],
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    ],
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      "skała",
      "skała#Polish"
    ],
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      "halë",
      "halë#Albanian"
    ],
    [
      "कल",
      "कल#Sanskrit"
    ],
    [
      "skélti",
      "skelti#Lithuanian"
    ],
    [
      "σκάλλω",
      "σκάλλω#Ancient_Greek"
    ],
    [
      "scale",
      "scale#English"
    ],
    [
      "shell",
      "shell#English"
    ]
  ],
  "references": [],
  "descendants": [],
  "lexical": [
    {
      "pos": "noun",
      "glosses": [
        "A shell, scale or husk; a cod or pod.",
        "A fine-grained sedimentary rock of a thin, laminated, and often friable, structure.",
        "The shale oil and shale gas segment of the oil and gas industry."
      ],
      "tags": [
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    {
      "pos": "verb",
      "glosses": [
        "To take off the shell or coat of."
      ],
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  "omittedAuxiliaryFields": {
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}

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 shale →

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-c2hhbGU