"KPSS test" meaning in English

{
  "forms": [
    {
      "form": "KPSS tests",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "head": "KPSS test"
      },
      "expansion": "KPSS test (plural KPSS tests)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "alt_of": [
        {
          "word": "Kwiatkowski-Phillips-Schmidt-Shin test"
        }
      ],
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
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          "kind": "other",
          "name": "English entries with language name categories using raw markup",
          "parents": [
            "Entries with language name categories using raw markup",
            "Entry maintenance"
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          "source": "w"
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          "kind": "other",
          "name": "English terms with non-redundant non-automated sortkeys",
          "parents": [
            "Terms with non-redundant non-automated sortkeys",
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          "source": "w"
        }
      ],
      "glosses": [
        "Short for Kwiatkowski-Phillips-Schmidt-Shin test."
      ],
      "id": "en-KPSS_test-en-noun-D1QBB2sd",
      "links": [
        [
          "Kwiatkowski-Phillips-Schmidt-Shin test",
          "Kwiatkowski-Phillips-Schmidt-Shin test#English"
        ]
      ],
      "raw_glosses": [
        "(econometrics) Short for Kwiatkowski-Phillips-Schmidt-Shin test."
      ],
      "tags": [
        "abbreviation",
        "alt-of"
      ]
    }
  ],
  "word": "KPSS test"
}

{
  "forms": [
    {
      "form": "KPSS tests",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "head": "KPSS test"
      },
      "expansion": "KPSS test (plural KPSS tests)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "alt_of": [
        {
          "word": "Kwiatkowski-Phillips-Schmidt-Shin test"
        }
      ],
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English entries with language name categories using raw markup",
        "English eponyms",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "English short forms",
        "English terms with non-redundant non-automated sortkeys"
      ],
      "glosses": [
        "Short for Kwiatkowski-Phillips-Schmidt-Shin test."
      ],
      "links": [
        [
          "Kwiatkowski-Phillips-Schmidt-Shin test",
          "Kwiatkowski-Phillips-Schmidt-Shin test#English"
        ]
      ],
      "raw_glosses": [
        "(econometrics) Short for Kwiatkowski-Phillips-Schmidt-Shin test."
      ],
      "tags": [
        "abbreviation",
        "alt-of"
      ]
    }
  ],
  "word": "KPSS test"
}