*SET-U

English word origin

Etymology of oro-

Etymology tree Proto-Indo-European *h₁óh₃s Proto-Italic *ōs Latin ōsder. English oro- Derived from Latin ōs (“the mouth”).

2 source sectionsExtended source reportWiktionary original ↗
In this entry · 2 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.

Source etymology 1

Original entry ↗
prefix

Of or pertaining to the mouth.

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

Etymology tree Proto-Indo-European *h₁óh₃s Proto-Italic *ōs Latin ōsder. English oro- Derived from Latin ōs (“the mouth”).

Inspect preserved source fields

Raw extraction fields are retained for auditing. Their order does not establish ancestry.

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        "2": ":der",
        "3": "la:ōs<id:mouth><t:the mouth>",
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      },
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    },
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      "expansion": "Etymology tree\nProto-Indo-European *h₁óh₃s\nProto-Italic *ōs\nLatin ōsder.\nEnglish oro-\nDerived from Latin ōs (“the mouth”)."
    }
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      "Reconstruction:Proto-Indo-European/h₁óh₃s"
    ],
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    ],
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    ],
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      "ōs",
      "os#Latin:_mouth"
    ]
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Source etymology 2

Original entry ↗
prefix

Of or pertaining to the mountains.

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

From Ancient Greek ὄρος (óros, “mountain, high ground”), from ὄρνῡμῐ (órnūmĭ, “to stir, stir up; to urge on, incite”) + -ος (-os, nominal suffix).

Relationships mentioned by the source

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

  • Root classification mention*h₃er-ine-pro
  • Derivation mentionὄροςgrc · mountain, high ground
  • Word-formation componentὄρνῡμῐgrc · to stir, stir up; to urge on, incite
  • Word-formation component-οςgrc
Inspect preserved source fields

Raw extraction fields are retained for auditing. Their order does not establish ancestry.

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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 oro- →

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-b3JvLQ