*SET-U

English word origin

Etymology of apex

Etymology tree Proto-Indo-European *h₂ep-der. Proto-Italic *apeks Latin apexbor. English apex Borrowed from Latin apex (“point, tip, summit”).

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 ↗
noun

The highest or the greatest part of something, especially forming a point. · The highest point in a plane or solid figure, relative to a base line or plane. · The lowest part of the human heart. · The deepest part of a tooth's root.

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

Etymology tree Proto-Indo-European *h₂ep-der. Proto-Italic *apeks Latin apexbor. English apex Borrowed from Latin apex (“point, tip, summit”).

Relationships mentioned by the source

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

  • Borrowed-form mentionapexla

This page abbreviates 14 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.

{
  "templates": [
    {
      "name": "etymon",
      "args": {
        "1": "en",
        "2": ":bor",
        "3": "la:apex",
        "tree": "1"
      },
      "expansion": "Etymology tree\nProto-Indo-European *h₂ep-der.\nProto-Italic *apeks\nLatin apexbor.\nEnglish apex\n[Appendix:Glossary#loanword|Borrowed]] from\", \"terms\" : [ { \"children\" : [ { \"terms\" : [ { \"alt\" : \"*apeks\", \"lang_name\" : \"Proto-Italic\", \"status\" : \"inline\", \"children\" : [ { \"keyword_abbrev\" : \"der.\", \"keyword_label\" : \"Derived from\", \"terms\" : [ { \"id\" : \"join\", \"children\" : [ ], \"status\" : \"ok\", \"lang_name\" : \"Proto-Indo-European\", \"term\" : \"*h₂ep-\", \"lang\" : \"ine-pro\" } ], \"keyword\" : \"derived\" } ], \"lang\" : \"itc-pro\" } ], \"keyword_label\" : \"Inherited from\", \"keyword\" : \"inherited\" } ], \"lang_name\" : \"Latin\", \"term\" : \"apex\", \"status\" : \"ok\", \"lang\" : \"la\" } ], \"keyword\" : \"bor\" } ], \"lang_name\" : \"English\", \"term\" : \"apex\", \"status\" : \"ok\", \"lang\" : \"en\" }\" data-lang=\"en\" data-title=\"apex\">"
    },
    {
      "name": "bor+",
      "args": {
        "1": "en",
        "2": "la",
        "3": "apex",
        "4": "",
        "5": "point, tip, summit"
      },
      "expansion": "Borrowed from Latin apex (“point, tip, summit”)"
    },
    {
      "name": "etymon",
      "args": {
        "1": "en",
        "2": ":bor",
        "3": "la:apex",
        "tree": "1"
      },
      "expansion": "Etymology tree\nProto-Indo-European *h₂ep-der.\nProto-Italic *apeks\nLatin apexbor.\nEnglish apex"
    }
  ],
  "links": [
    [
      "*h₂ep-",
      "Reconstruction:Proto-Indo-European/h₂ep-#Proto-Indo-European:_join"
    ],
    [
      "apex",
      "apex#Latin"
    ],
    [
      "apex",
      "apex#Latin"
    ]
  ],
  "references": [],
  "descendants": [],
  "lexical": [
    {
      "pos": "noun",
      "glosses": [
        "The highest or the greatest part of something, especially forming a point.",
        "The highest point in a plane or solid figure, relative to a base line or plane.",
        "The lowest part of the human heart.",
        "The deepest part of a tooth's root."
      ],
      "tags": [],
      "recordId": "e1d2ac0c38e0dec14d93c912422acb76383ac8acf584df0addba4390b2150d96",
      "rawRecordSha256": "88d00fd8101905ac43450f271dc082201dd4d043e819955f094b8abe80585b7f",
      "sourceRecordOrdinal": 37059
    }
  ],
  "omittedAuxiliaryFields": {
    "templates": 0,
    "links": 0,
    "references": 0,
    "descendants": 0,
    "lexicalRecords": 0,
    "lexicalSenses": 14,
    "glosses": 0
  }
}

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 apex →

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-YXBleA