*SET-U

English word origin

Etymology of opal

Etymology tree Proto-Indo-European *úp Proto-Indo-European *-er Proto-Indo-European *upéri Proto-Indo-Iranian *upári Sanskrit उ॒परि॑ (upári) Sanskrit उपल (upala)bor. Medieval Greek ὀπάλλιος (opállios)der. Latin opaluslbo

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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 mineral consisting, like quartz, of silica, but inferior to quartz in hardness and specific gravity, of the chemical formula SiO₂·nH₂O. · A precious gem, an iridescent gemstone found in the opal-silica mineral substrate (potch) · The colour of opal: any shade of blue with bright flecks of other colours, such as white, yellow, and red. · A colloquial name used in molecular biology referring to a particular stop codon sequence, "UGA."

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

Etymology tree Proto-Indo-European *úp Proto-Indo-European *-er Proto-Indo-European *upéri Proto-Indo-Iranian *upári Sanskrit उ॒परि॑ (upári) Sanskrit उपल (upala)bor. Medieval Greek ὀπάλλιος (opállios)der. Latin opaluslbor. French opalebor. English opal In Florio’s A World of Words 1598 as opale, from French opale, from Latin opalus, from Medieval Greek ὀπάλλιος (opállios), from Sanskrit उपल (upala, “gem, stone”), from उपरि (upári, “the upper millstone”). Distantly related to over.

Relationships mentioned by the source

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

This page abbreviates 1 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.

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  "templates": [
    {
      "name": "ety",
      "args": {
        "1": "en",
        "2": ":bor",
        "3": "fr:opale",
        "tree": "1"
      },
      "expansion": "Etymology tree\nProto-Indo-European *úp\nProto-Indo-European *-er\nProto-Indo-European *upéri\nProto-Indo-Iranian *upári\nSanskrit उ॒परि॑ (upári)\nSanskrit उपल (upala)bor.\nMedieval Greek ὀπάλλιος (opállios)der.\nLatin opaluslbor.\nFrench opalebor.\nEnglish opal\n[Appendix:Glossary#loanword|Borrowed]] from\", \"terms\" : [ { \"children\" : [ { \"keyword_abbrev\" : \"lbor.\", \"keyword_label\" : \"Learned borrowing from\", \"terms\" : [ { \"children\" : [ { \"keyword_abbrev\" : \"der.\", \"keyword_label\" : \"Derived from\", \"terms\" : [ { \"children\" : [ { \"keyword_abbrev\" : \"bor.\", \"keyword_label\" : \"Borrowed from\", \"terms\" : [ { \"children\" : [ { \"terms\" : [ { \"children\" : [ { \"terms\" : [ { \"id\" : \"above\", \"children\" : [ { \"terms\" : [ { \"alt\" : \"*upéri\", \"children\" : [ { \"terms\" : [ { \"children\" : [ ], \"lang_name\" : \"Proto-Indo-European\", \"term\" : \"*úp\", \"status\" : \"missing\", \"lang\" : \"ine-pro\" }, { \"alt\" : \"*-er\", \"children\" : [ ], \"lang_name\" : \"Proto-Indo-European\", \"term\" : \"*-r\", \"status\" : \"ok\", \"lang\" : \"ine-pro\" } ], \"keyword_label\" : \"From\", \"is_group\" : true, \"keyword\" : \"affix\" } ], \"lang_name\" : \"Proto-Indo-European\", \"term\" : \"*upér\", \"status\" : \"ok\", \"lang\" : \"ine-pro\" } ], \"keyword_label\" : \"Inherited from\", \"keyword\" : \"inherited\" } ], \"status\" : \"ok\", \"lang_name\" : \"Proto-Indo-Iranian\", \"term\" : \"*upári\", \"lang\" : \"iir-pro\" } ], \"keyword_label\" : \"Inherited from\", \"keyword\" : \"inherited\" } ], \"lang_name\" : \"Sanskrit\", \"term\" : \"उ॒परि॑\", \"status\" : \"ok\", \"lang\" : \"sa\" } ], \"keyword_label\" : \"From\", \"keyword\" : \"from\" } ], \"lang_name\" : \"Sanskrit\", \"term\" : \"उपल\", \"status\" : \"inline\", \"lang\" : \"sa\" } ], \"keyword\" : \"bor\" } ], \"lang_name\" : \"Medieval Greek\", \"term\" : \"ὀπάλλιος\", \"status\" : \"ok\", \"lang\" : \"gkm\" } ], \"keyword\" : \"derived\" } ], \"lang_name\" : \"Latin\", \"term\" : \"opalus\", \"status\" : \"ok\", \"lang\" : \"la\" } ], \"keyword\" : \"lbor\" } ], \"lang_name\" : \"French\", \"term\" : \"opale\", \"status\" : \"ok\", \"lang\" : \"fr\" } ], \"keyword\" : \"bor\" } ], \"lang_name\" : \"English\", \"term\" : \"opal\", \"status\" : \"ok\", \"lang\" : \"en\" }\" data-lang=\"en\" data-title=\"opal\">"
    },
    {
      "name": "bor",
      "args": {
        "1": "en",
        "2": "fr",
        "3": "opale"
      },
      "expansion": "French opale"
    },
    {
      "name": "der",
      "args": {
        "1": "en",
        "2": "la",
        "3": "opalus"
      },
      "expansion": "Latin opalus"
    },
    {
      "name": "der",
      "args": {
        "1": "en",
        "2": "gkm",
        "3": "ὀπάλλιος"
      },
      "expansion": "Medieval Greek ὀπάλλιος (opállios)"
    },
    {
      "name": "der",
      "args": {
        "1": "en",
        "2": "sa",
        "3": "उपल",
        "4": "",
        "5": "gem, stone"
      },
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    },
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    }
  ],
  "links": [
    [
      "*úp",
      "Reconstruction:Proto-Indo-European/úp"
    ],
    [
      "*-er",
      "Reconstruction:Proto-Indo-European/-r"
    ],
    [
      "*upéri",
      "Reconstruction:Proto-Indo-European/upér"
    ],
    [
      "*upári",
      "Reconstruction:Proto-Indo-Iranian/upári#Proto-Indo-Iranian:_above"
    ],
    [
      "उ॒परि॑",
      "उपरि#Sanskrit"
    ],
    [
      "उपल",
      "उपल#Sanskrit"
    ],
    [
      "ὀπάλλιος",
      "ὀπάλλιος#Ancient_Greek"
    ],
    [
      "opalus",
      "opalus#Latin"
    ],
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      "opale",
      "opale#French"
    ],
    [
      "Florio",
      "Florio"
    ],
    [
      "opale",
      "opale#French"
    ],
    [
      "opalus",
      "opalus#Latin"
    ],
    [
      "ὀπάλλιος",
      "ὀπάλλιος#Ancient_Greek"
    ],
    [
      "उपल",
      "उपल#Sanskrit"
    ],
    [
      "उपरि",
      "उपरि#Sanskrit"
    ],
    [
      "over",
      "over#English"
    ]
  ],
  "references": [],
  "descendants": [],
  "lexical": [
    {
      "pos": "noun",
      "glosses": [
        "A mineral consisting, like quartz, of silica, but inferior to quartz in hardness and specific gravity, of the chemical formula SiO₂·nH₂O.",
        "A precious gem, an iridescent gemstone found in the opal-silica mineral substrate (potch)",
        "The colour of opal: any shade of blue with bright flecks of other colours, such as white, yellow, and red.",
        "A colloquial name used in molecular biology referring to a particular stop codon sequence, \"UGA.\""
      ],
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      "sourceRecordOrdinal": 232096
    }
  ],
  "omittedAuxiliaryFields": {
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    "lexicalRecords": 0,
    "lexicalSenses": 1,
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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 opal →

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-b3BhbA