"locant" meaning in English

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "locus<alt:loc(us)>",
        "3": "-ant"
      },
      "expansion": "By surface analysis, loc(us) + -ant",
      "name": "surf"
    }
  ],
  "etymology_text": "By surface analysis, loc(us) + -ant",
  "forms": [
    {
      "form": "locants",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "locant (plural locants)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English terms suffixed with -ant",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 2 entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Organic chemistry",
          "orig": "en:Organic chemistry",
          "parents": [
            "Chemistry",
            "Sciences",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "examples": [
        {
          "text": "The 2 in hexan-2-one is a locant."
        }
      ],
      "glosses": [
        "That part of the name of a compound (often a letter or number) that describes the position of an atom, residue or functional group."
      ],
      "id": "en-locant-en-noun-oULi7rb1",
      "links": [
        [
          "organic chemistry",
          "organic chemistry"
        ],
        [
          "name",
          "name"
        ],
        [
          "compound",
          "compound"
        ],
        [
          "letter",
          "letter"
        ],
        [
          "number",
          "number"
        ],
        [
          "position",
          "position"
        ],
        [
          "atom",
          "atom"
        ],
        [
          "residue",
          "residue"
        ],
        [
          "functional group",
          "functional group"
        ]
      ],
      "raw_glosses": [
        "(organic chemistry) That part of the name of a compound (often a letter or number) that describes the position of an atom, residue or functional group."
      ],
      "related": [
        {
          "word": "locate"
        },
        {
          "word": "location"
        },
        {
          "word": "locator"
        },
        {
          "word": "locus"
        }
      ],
      "topics": [
        "chemistry",
        "natural-sciences",
        "organic-chemistry",
        "physical-sciences"
      ],
      "wikipedia": [
        "locant"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/ˈloʊkənt/",
      "tags": [
        "General-American"
      ]
    }
  ],
  "word": "locant"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "locus<alt:loc(us)>",
        "3": "-ant"
      },
      "expansion": "By surface analysis, loc(us) + -ant",
      "name": "surf"
    }
  ],
  "etymology_text": "By surface analysis, loc(us) + -ant",
  "forms": [
    {
      "form": "locants",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "locant (plural locants)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "related": [
    {
      "word": "locate"
    },
    {
      "word": "location"
    },
    {
      "word": "locator"
    },
    {
      "word": "locus"
    }
  ],
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English nouns",
        "English terms suffixed with -ant",
        "Pages with 2 entries",
        "Pages with entries",
        "en:Organic chemistry"
      ],
      "examples": [
        {
          "text": "The 2 in hexan-2-one is a locant."
        }
      ],
      "glosses": [
        "That part of the name of a compound (often a letter or number) that describes the position of an atom, residue or functional group."
      ],
      "links": [
        [
          "organic chemistry",
          "organic chemistry"
        ],
        [
          "name",
          "name"
        ],
        [
          "compound",
          "compound"
        ],
        [
          "letter",
          "letter"
        ],
        [
          "number",
          "number"
        ],
        [
          "position",
          "position"
        ],
        [
          "atom",
          "atom"
        ],
        [
          "residue",
          "residue"
        ],
        [
          "functional group",
          "functional group"
        ]
      ],
      "raw_glosses": [
        "(organic chemistry) That part of the name of a compound (often a letter or number) that describes the position of an atom, residue or functional group."
      ],
      "topics": [
        "chemistry",
        "natural-sciences",
        "organic-chemistry",
        "physical-sciences"
      ],
      "wikipedia": [
        "locant"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/ˈloʊkənt/",
      "tags": [
        "General-American"
      ]
    }
  ],
  "word": "locant"
}