*SET-U

English word origin

Etymology of geo-

Etymology tree Pre-Greek der. Proto-Hellenic *gayader. Ancient Greek γαῖᾰ (gaîă)clip. Ancient Greek γῆ (gê) Ancient Greek -ο- (-o-) Ancient Greek γεω- (geō-)der. English geo- From Ancient Greek γεω- (geō-), combining for

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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 ↗
prefix

earth · geography

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

Etymology tree Pre-Greek der. Proto-Hellenic *gayader. Ancient Greek γαῖᾰ (gaîă)clip. Ancient Greek γῆ (gê) Ancient Greek -ο- (-o-) Ancient Greek γεω- (geō-)der. English geo- From Ancient Greek γεω- (geō-), combining form of γῆ (gê, “earth”). By surface analysis, ge- (“earth”) + -o-.

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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        "1": "en",
        "2": ":der",
        "3": "grc:γεω-",
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      },
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    },
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        "3": "γεω-"
      },
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    },
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    }
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    ],
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      "γῆ#Ancient_Greek"
    ],
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      "-ο-",
      "-ο-#Ancient_Greek"
    ],
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      "γεω-",
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    ],
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      "γεω-",
      "γεω-#Ancient_Greek"
    ],
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      "γῆ#Ancient_Greek"
    ],
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      "ge-",
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    ],
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      "-o-",
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    ]
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  "references": [],
  "descendants": [],
  "lexical": [
    {
      "pos": "prefix",
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        "earth",
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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 geo- →

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-Z2VvLQ