English word origin

Etymology of RF

Various etymologies.

2 source sectionsBrief source recordWiktionary 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 ↗

noun

Initialism of right foot. · Initialism of rangefinder. · Initialism of radio frequency. · Initialism of rheumatoid factor.

name

Initialism of Russian Federation.

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

Various etymologies.

This page abbreviates 4 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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  "lexical": [
    {
      "pos": "noun",
      "glosses": [
        "Initialism of right foot.",
        "Initialism of rangefinder.",
        "Initialism of radio frequency.",
        "Initialism of rheumatoid factor."
      ],
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    },
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      "glosses": [
        "Initialism of Russian Federation."
      ],
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}

Source etymology 2

Original entry ↗

noun

reconnaissance fighter; an unarmed fighter modified for photo-reconnaissance (prefix)

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

Combination of prefix F and prefix modifier R

Inspect preserved source fields

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

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  "templates": [],
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    [
      "F",
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    ],
    [
      "R",
      "R"
    ]
  ],
  "references": [],
  "descendants": [],
  "lexical": [
    {
      "pos": "noun",
      "glosses": [
        "reconnaissance fighter; an unarmed fighter modified for photo-reconnaissance (prefix)"
      ],
      "tags": [
        "US"
      ],
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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 RF →

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-UkY