"-sis" meaning in English

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "grc",
        "3": "-σις",
        "t": "forms noun of action"
      },
      "expansion": "Ancient Greek -σις (-sis, “forms noun of action”)",
      "name": "der"
    }
  ],
  "etymology_text": "Ultimately from Ancient Greek -σις (-sis, “forms noun of action”), often via Latin or French. Identical in meaning with Latin -entia, English -ing.",
  "forms": [
    {
      "form": "-ses",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "en",
        "2": "suffix",
        "cat2": "noun-forming suffixes",
        "cat3": "unproductive suffixes",
        "head": "",
        "id": ""
      },
      "expansion": "-sis",
      "name": "head"
    },
    {
      "args": {
        "cat2": "noun-forming suffixes",
        "cat3": "unproductive suffixes",
        "sort": "sis"
      },
      "expansion": "-sis",
      "name": "en-suffix"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "suffix",
  "senses": [
    {
      "examples": [
        {
          "text": "catharsis, dialysis, diagnosis, crisis"
        }
      ],
      "glosses": [
        "forming nouns of action or process"
      ],
      "id": "en--sis-en-suffix-PPEjcOMq",
      "tags": [
        "morpheme"
      ]
    },
    {
      "categories": [
        {
          "kind": "other",
          "langcode": "en",
          "name": "Medicine",
          "orig": "en:Medicine",
          "parents": [],
          "source": "w"
        },
        {
          "_dis": "19 49 32",
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [],
          "source": "w+disamb"
        },
        {
          "_dis": "20 49 31",
          "kind": "other",
          "name": "Pages using catfix",
          "parents": [],
          "source": "w+disamb"
        },
        {
          "_dis": "19 50 31",
          "kind": "other",
          "name": "Pages with 4 entries",
          "parents": [],
          "source": "w+disamb"
        },
        {
          "_dis": "19 50 31",
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w+disamb"
        }
      ],
      "examples": [
        {
          "text": "psoriasis, sepsis, tuberculosis, psychosis"
        }
      ],
      "glosses": [
        "forming nouns of condition"
      ],
      "id": "en--sis-en-suffix-MGLNtTn2",
      "links": [
        [
          "medicine",
          "medicine"
        ]
      ],
      "raw_glosses": [
        "(medicine) forming nouns of condition"
      ],
      "tags": [
        "morpheme"
      ],
      "topics": [
        "medicine",
        "sciences"
      ]
    },
    {
      "examples": [
        {
          "text": "basis, oasis, thesis, stasis"
        }
      ],
      "glosses": [
        "forming additional nouns"
      ],
      "id": "en--sis-en-suffix-jI7bcOyU",
      "tags": [
        "morpheme"
      ]
    }
  ],
  "word": "-sis"
}

{
  "categories": [
    "English entries with incorrect language header",
    "English lemmas",
    "English noun-forming suffixes",
    "English suffixes",
    "English terms derived from Ancient Greek",
    "English unproductive suffixes",
    "Pages using catfix",
    "Pages with 4 entries",
    "Pages with entries"
  ],
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "grc",
        "3": "-σις",
        "t": "forms noun of action"
      },
      "expansion": "Ancient Greek -σις (-sis, “forms noun of action”)",
      "name": "der"
    }
  ],
  "etymology_text": "Ultimately from Ancient Greek -σις (-sis, “forms noun of action”), often via Latin or French. Identical in meaning with Latin -entia, English -ing.",
  "forms": [
    {
      "form": "-ses",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "en",
        "2": "suffix",
        "cat2": "noun-forming suffixes",
        "cat3": "unproductive suffixes",
        "head": "",
        "id": ""
      },
      "expansion": "-sis",
      "name": "head"
    },
    {
      "args": {
        "cat2": "noun-forming suffixes",
        "cat3": "unproductive suffixes",
        "sort": "sis"
      },
      "expansion": "-sis",
      "name": "en-suffix"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "suffix",
  "senses": [
    {
      "examples": [
        {
          "text": "catharsis, dialysis, diagnosis, crisis"
        }
      ],
      "glosses": [
        "forming nouns of action or process"
      ],
      "tags": [
        "morpheme"
      ]
    },
    {
      "categories": [
        "en:Medicine"
      ],
      "examples": [
        {
          "text": "psoriasis, sepsis, tuberculosis, psychosis"
        }
      ],
      "glosses": [
        "forming nouns of condition"
      ],
      "links": [
        [
          "medicine",
          "medicine"
        ]
      ],
      "raw_glosses": [
        "(medicine) forming nouns of condition"
      ],
      "tags": [
        "morpheme"
      ],
      "topics": [
        "medicine",
        "sciences"
      ]
    },
    {
      "examples": [
        {
          "text": "basis, oasis, thesis, stasis"
        }
      ],
      "glosses": [
        "forming additional nouns"
      ],
      "tags": [
        "morpheme"
      ]
    }
  ],
  "word": "-sis"
}