*SET-U

English word origin

Etymology of rheo-

Etymology tree Proto-Indo-European *ser-? Proto-Indo-European *srew- Proto-Indo-European *-eti Proto-Indo-European *sréweti Proto-Hellenic *hréwō Ancient Greek ῥέω (rhéō) English rheo- Ancient Greek ῥέω (rhéō, “flow”)

1 source sectionExtended source reportWiktionary original ↗
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 ↗
prefix

flow, current

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

Etymology tree Proto-Indo-European *ser-? Proto-Indo-European *srew- Proto-Indo-European *-eti Proto-Indo-European *sréweti Proto-Hellenic *hréwō Ancient Greek ῥέω (rhéō) English rheo- Ancient Greek ῥέω (rhéō, “flow”)

Relationships mentioned by the source

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

  • Unspecified derivation mentionῥέωgrc
Inspect preserved source fields

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

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    {
      "name": "etymon",
      "args": {
        "1": "en",
        "2": ":uder",
        "3": "grc:ῥέω",
        "tree": "1"
      },
      "expansion": "Etymology tree\nProto-Indo-European *ser-?\nProto-Indo-European *srew-\nProto-Indo-European *-eti\nProto-Indo-European *sréweti\nProto-Hellenic *hréwō\nAncient Greek ῥέω (rhéō)\nEnglish rheo-\n[Appendix:Glossary#inherited|Inherited]] from\", \"keyword\" : \"inherited\" } ], \"lang_name\" : \"Proto-Hellenic\", \"term\" : \"*hréwō\", \"status\" : \"ok\", \"lang\" : \"grk-pro\" } ], \"keyword_label\" : \"Inherited from\", \"keyword\" : \"inherited\" } ], \"lang_name\" : \"Ancient Greek\", \"term\" : \"ῥέω\", \"status\" : \"ok\", \"lang\" : \"grc\" } ], \"keyword_label\" : \"From\", \"keyword\" : \"uder\" } ], \"lang_name\" : \"English\", \"term\" : \"rheo-\", \"status\" : \"ok\", \"lang\" : \"en\" }\" data-lang=\"en\" data-title=\"rheo-\">"
    },
    {
      "name": "uder",
      "args": {
        "1": "en",
        "2": "grc",
        "3": "ῥέω",
        "4": "",
        "5": "flow"
      },
      "expansion": "Ancient Greek ῥέω (rhéō, “flow”)"
    },
    {
      "name": "etymon",
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        "1": "en",
        "2": ":uder",
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      "expansion": "Etymology tree\nProto-Indo-European *ser-?\nProto-Indo-European *srew-\nProto-Indo-European *-eti\nProto-Indo-European *sréweti\nProto-Hellenic *hréwō\nAncient Greek ῥέω (rhéō)\nEnglish rheo-"
    }
  ],
  "links": [
    [
      "*ser-",
      "Reconstruction:Proto-Indo-European/ser-#Proto-Indo-European:_flow"
    ],
    [
      "*srew-",
      "Reconstruction:Proto-Indo-European/srew-#Proto-Indo-European:_flow"
    ],
    [
      "*-eti",
      "Reconstruction:Proto-Indo-European/-eti"
    ],
    [
      "*sréweti",
      "Reconstruction:Proto-Indo-European/sréweti"
    ],
    [
      "*hréwō",
      "Reconstruction:Proto-Hellenic/hréwō"
    ],
    [
      "ῥέω",
      "ῥέω#Ancient_Greek"
    ],
    [
      "ῥέω",
      "ῥέω#Ancient_Greek"
    ]
  ],
  "references": [],
  "descendants": [],
  "lexical": [
    {
      "pos": "prefix",
      "glosses": [
        "flow, current"
      ],
      "tags": [
        "morpheme"
      ],
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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 rheo- →

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-cmhlby0