"Meillet's law" meaning in English

{
  "etymology_text": "Named after the French Indo-Europeanist Antoine Meillet, who discovered it.",
  "head_templates": [
    {
      "args": {},
      "expansion": "Meillet's law",
      "name": "en-proper noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "name",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with language name categories using raw markup",
          "parents": [
            "Entries with language name categories using raw markup",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English terms with non-redundant non-automated sortkeys",
          "parents": [
            "Terms with non-redundant non-automated sortkeys",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Phonology",
          "orig": "en:Phonology",
          "parents": [
            "Linguistics",
            "Language",
            "Social sciences",
            "Communication",
            "Sciences",
            "Society",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "A Common Slavic accent law, according to which Slavic words have a circumflex on the root vowel (i.e. the first syllable) if that word had a mobile accent paradigm in Proto-Slavic and Proto-Balto-Slavic, regardless of whether the root had the Balto-Slavic acute register."
      ],
      "id": "en-Meillet's_law-en-name-nGEeVinP",
      "links": [
        [
          "phonology",
          "phonology"
        ],
        [
          "Common Slavic",
          "Common Slavic"
        ],
        [
          "accent",
          "accent"
        ],
        [
          "circumflex",
          "circumflex"
        ]
      ],
      "raw_glosses": [
        "(phonology) A Common Slavic accent law, according to which Slavic words have a circumflex on the root vowel (i.e. the first syllable) if that word had a mobile accent paradigm in Proto-Slavic and Proto-Balto-Slavic, regardless of whether the root had the Balto-Slavic acute register."
      ],
      "topics": [
        "human-sciences",
        "linguistics",
        "phonology",
        "sciences"
      ],
      "wikipedia": [
        "Meillet's law"
      ]
    }
  ],
  "word": "Meillet's law"
}

{
  "etymology_text": "Named after the French Indo-Europeanist Antoine Meillet, who discovered it.",
  "head_templates": [
    {
      "args": {},
      "expansion": "Meillet's law",
      "name": "en-proper noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "name",
  "senses": [
    {
      "categories": [
        "English entries with language name categories using raw markup",
        "English eponyms",
        "English lemmas",
        "English multiword terms",
        "English proper nouns",
        "English terms with non-redundant non-automated sortkeys",
        "English uncountable nouns",
        "en:Phonology"
      ],
      "glosses": [
        "A Common Slavic accent law, according to which Slavic words have a circumflex on the root vowel (i.e. the first syllable) if that word had a mobile accent paradigm in Proto-Slavic and Proto-Balto-Slavic, regardless of whether the root had the Balto-Slavic acute register."
      ],
      "links": [
        [
          "phonology",
          "phonology"
        ],
        [
          "Common Slavic",
          "Common Slavic"
        ],
        [
          "accent",
          "accent"
        ],
        [
          "circumflex",
          "circumflex"
        ]
      ],
      "raw_glosses": [
        "(phonology) A Common Slavic accent law, according to which Slavic words have a circumflex on the root vowel (i.e. the first syllable) if that word had a mobile accent paradigm in Proto-Slavic and Proto-Balto-Slavic, regardless of whether the root had the Balto-Slavic acute register."
      ],
      "topics": [
        "human-sciences",
        "linguistics",
        "phonology",
        "sciences"
      ],
      "wikipedia": [
        "Meillet's law"
      ]
    }
  ],
  "word": "Meillet's law"
}