"S/F" meaning in English

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "S/F ratio>SpO2/FiO2 ratio",
        "id": "S/F ratio",
        "tree": "1"
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      "expansion": "Etymology tree\nProto-Indo-European *per-der.\nAncient Greek περί (perí)\nAncient Greek περῐ- (peri-)\nProto-Indo-European *bʰer-\nProto-Indo-European *bʰéreti\nProto-Hellenic *pʰérō\nAncient Greek φέρω (phérō)\nAncient Greek περιφέρω (periphérō)\nProto-Indo-European *-os\nProto-Indo-European *-ēs\nAncient Greek -ης (-ēs)\nAncient Greek περιφερής (peripherḗs)\nProto-Indo-European *-h₂\nProto-Indo-European *-ih₂der.\nAncient Greek -ια (-ia)\nAncient Greek περιφέρεια (periphéreia)bor.\nLatin peripheriabor.\nMiddle French peripheriebor.\nEnglish periphery\nProto-Italic *-ālis\nLatin -ālisbor.\nOld French -albor.\nLatin -ālis\nOld French -elbor.\nLatin -ālisbor.\nMiddle English -al\nEnglish -al\nEnglish peripheral\nProto-Indo-European *h₂eḱ-der.?\nAncient Greek ὀξύς (oxús)\nProto-Indo-European *ǵenh₁-\nProto-Indo-European *-os\nProto-Indo-European *ǵénh₁os\nProto-Hellenic *génos\nAncient Greek γένος (génos)\nFrench oxygènebor.\nEnglish oxygen\nLate Latin saturatiobor.\nEnglish saturation\nEnglish peripheral oxygen saturation\nEnglish SpO2\nMiddle English fraccioun\nEnglish fraction\nProto-West Germanic *ab\nOld English æf\nOld English of\nMiddle English of\nEnglish of\nEnglish inspired\nEnglish oxygen\nEnglish FiO2\nEnglish ratio\nEnglish SpO2/FiO2 ratio\nEnglish S/F ratio\nEnglish F",
      "name": "etymon"
    }
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  "etymology_text": "From S/F ratio.\nEtymology tree\nProto-Indo-European *per-der.\nAncient Greek περί (perí)\nAncient Greek περῐ- (peri-)\nProto-Indo-European *bʰer-\nProto-Indo-European *bʰéreti\nProto-Hellenic *pʰérō\nAncient Greek φέρω (phérō)\nAncient Greek περιφέρω (periphérō)\nProto-Indo-European *-os\nProto-Indo-European *-ēs\nAncient Greek -ης (-ēs)\nAncient Greek περιφερής (peripherḗs)\nProto-Indo-European *-h₂\nProto-Indo-European *-ih₂der.\nAncient Greek -ια (-ia)\nAncient Greek περιφέρεια (periphéreia)bor.\nLatin peripheriabor.\nMiddle French peripheriebor.\nEnglish periphery\nProto-Italic *-ālis\nLatin -ālisbor.\nOld French -albor.\nLatin -ālis\nOld French -elbor.\nLatin -ālisbor.\nMiddle English -al\nEnglish -al\nEnglish peripheral\nProto-Indo-European *h₂eḱ-der.?\nAncient Greek ὀξύς (oxús)\nProto-Indo-European *ǵenh₁-\nProto-Indo-European *-os\nProto-Indo-European *ǵénh₁os\nProto-Hellenic *génos\nAncient Greek γένος (génos)\nFrench oxygènebor.\nEnglish oxygen\nLate Latin saturatiobor.\nEnglish saturation\nEnglish peripheral oxygen saturation\nEnglish SpO2\nMiddle English fraccioun\nEnglish fraction\nProto-West Germanic *ab\nOld English æf\nOld English of\nMiddle English of\nEnglish of\nEnglish inspired\nEnglish oxygen\nEnglish FiO2\nEnglish ratio\nEnglish SpO2/FiO2 ratio\nEnglish S/F ratio\nEnglish F",
  "forms": [
    {
      "form": "F",
      "tags": [
        "canonical"
      ]
    },
    {
      "form": "Fs",
      "tags": [
        "plural"
      ]
    }
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      "expansion": "F (plural Fs)",
      "name": "en-noun"
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  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "alt_of": [
        {
          "word": "S/F ratio"
        }
      ],
      "categories": [
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          "kind": "other",
          "name": "English entries with etymology trees",
          "parents": [
            "Entries with etymology trees",
            "Entry maintenance"
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          "source": "w"
        },
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
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          "source": "w"
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        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
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      ],
      "glosses": [
        "Short for S/F ratio."
      ],
      "id": "en-S/F-en-noun-6QvN66uh",
      "links": [
        [
          "S/F ratio",
          "S/F ratio#English"
        ]
      ],
      "tags": [
        "abbreviation",
        "alt-of"
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    }
  ],
  "word": "S/F"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "S/F ratio>SpO2/FiO2 ratio",
        "id": "S/F ratio",
        "tree": "1"
      },
      "expansion": "Etymology tree\nProto-Indo-European *per-der.\nAncient Greek περί (perí)\nAncient Greek περῐ- (peri-)\nProto-Indo-European *bʰer-\nProto-Indo-European *bʰéreti\nProto-Hellenic *pʰérō\nAncient Greek φέρω (phérō)\nAncient Greek περιφέρω (periphérō)\nProto-Indo-European *-os\nProto-Indo-European *-ēs\nAncient Greek -ης (-ēs)\nAncient Greek περιφερής (peripherḗs)\nProto-Indo-European *-h₂\nProto-Indo-European *-ih₂der.\nAncient Greek -ια (-ia)\nAncient Greek περιφέρεια (periphéreia)bor.\nLatin peripheriabor.\nMiddle French peripheriebor.\nEnglish periphery\nProto-Italic *-ālis\nLatin -ālisbor.\nOld French -albor.\nLatin -ālis\nOld French -elbor.\nLatin -ālisbor.\nMiddle English -al\nEnglish -al\nEnglish peripheral\nProto-Indo-European *h₂eḱ-der.?\nAncient Greek ὀξύς (oxús)\nProto-Indo-European *ǵenh₁-\nProto-Indo-European *-os\nProto-Indo-European *ǵénh₁os\nProto-Hellenic *génos\nAncient Greek γένος (génos)\nFrench oxygènebor.\nEnglish oxygen\nLate Latin saturatiobor.\nEnglish saturation\nEnglish peripheral oxygen saturation\nEnglish SpO2\nMiddle English fraccioun\nEnglish fraction\nProto-West Germanic *ab\nOld English æf\nOld English of\nMiddle English of\nEnglish of\nEnglish inspired\nEnglish oxygen\nEnglish FiO2\nEnglish ratio\nEnglish SpO2/FiO2 ratio\nEnglish S/F ratio\nEnglish F",
      "name": "etymon"
    }
  ],
  "etymology_text": "From S/F ratio.\nEtymology tree\nProto-Indo-European *per-der.\nAncient Greek περί (perí)\nAncient Greek περῐ- (peri-)\nProto-Indo-European *bʰer-\nProto-Indo-European *bʰéreti\nProto-Hellenic *pʰérō\nAncient Greek φέρω (phérō)\nAncient Greek περιφέρω (periphérō)\nProto-Indo-European *-os\nProto-Indo-European *-ēs\nAncient Greek -ης (-ēs)\nAncient Greek περιφερής (peripherḗs)\nProto-Indo-European *-h₂\nProto-Indo-European *-ih₂der.\nAncient Greek -ια (-ia)\nAncient Greek περιφέρεια (periphéreia)bor.\nLatin peripheriabor.\nMiddle French peripheriebor.\nEnglish periphery\nProto-Italic *-ālis\nLatin -ālisbor.\nOld French -albor.\nLatin -ālis\nOld French -elbor.\nLatin -ālisbor.\nMiddle English -al\nEnglish -al\nEnglish peripheral\nProto-Indo-European *h₂eḱ-der.?\nAncient Greek ὀξύς (oxús)\nProto-Indo-European *ǵenh₁-\nProto-Indo-European *-os\nProto-Indo-European *ǵénh₁os\nProto-Hellenic *génos\nAncient Greek γένος (génos)\nFrench oxygènebor.\nEnglish oxygen\nLate Latin saturatiobor.\nEnglish saturation\nEnglish peripheral oxygen saturation\nEnglish SpO2\nMiddle English fraccioun\nEnglish fraction\nProto-West Germanic *ab\nOld English æf\nOld English of\nMiddle English of\nEnglish of\nEnglish inspired\nEnglish oxygen\nEnglish FiO2\nEnglish ratio\nEnglish SpO2/FiO2 ratio\nEnglish S/F ratio\nEnglish F",
  "forms": [
    {
      "form": "F",
      "tags": [
        "canonical"
      ]
    },
    {
      "form": "Fs",
      "tags": [
        "plural"
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  "head_templates": [
    {
      "args": {},
      "expansion": "F (plural Fs)",
      "name": "en-noun"
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  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "alt_of": [
        {
          "word": "S/F ratio"
        }
      ],
      "categories": [
        "English countable nouns",
        "English entries with etymology trees",
        "English entries with incorrect language header",
        "English lemmas",
        "English nouns",
        "English short forms",
        "English terms derived from Ancient Greek",
        "English terms derived from French",
        "English terms derived from Late Latin",
        "English terms derived from Latin",
        "English terms derived from Middle English",
        "English terms derived from Middle French",
        "English terms derived from Old English",
        "English terms derived from Old French",
        "English terms derived from Proto-Hellenic",
        "English terms derived from Proto-Indo-European",
        "English terms derived from Proto-Italic",
        "English terms derived from Proto-West Germanic",
        "English terms derived from the Proto-Indo-European root *bʰer-",
        "English terms derived from the Proto-Indo-European root *h₂eḱ-",
        "English terms derived from the Proto-Indo-European root *per- (before)",
        "English terms derived from the Proto-Indo-European root *ǵenh₁-",
        "English terms inherited from Middle English",
        "English terms inherited from Old English",
        "English terms inherited from Proto-West Germanic",
        "English words without vowels",
        "Pages with 1 entry",
        "Pages with entries"
      ],
      "glosses": [
        "Short for S/F ratio."
      ],
      "links": [
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          "S/F ratio#English"
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      ],
      "tags": [
        "abbreviation",
        "alt-of"
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  "word": "S/F"
}