"12mo" meaning in English

{
  "etymology_text": "12 + -mo, for a twelfth of a sheet.",
  "forms": [
    {
      "form": "12mos",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "-",
        "2": "s"
      },
      "expansion": "12mo (usually uncountable, plural 12mos)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "alt_of": [
        {
          "extra": "a page size (5\"-5.5\" x 7.125\"-7.5\")",
          "word": "duodecimo"
        }
      ],
      "categories": [
        {
          "_dis": "81 19",
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [],
          "source": "w+disamb"
        }
      ],
      "glosses": [
        "Abbreviation of duodecimo, a page size (5\"-5.5\" x 7.125\"-7.5\")"
      ],
      "id": "en-12mo-en-noun-8zrB4pZ-",
      "links": [
        [
          "duodecimo",
          "duodecimo#English"
        ],
        [
          "page",
          "page"
        ],
        [
          "size",
          "size"
        ]
      ],
      "qualifier": "paper",
      "raw_glosses": [
        "(paper) Abbreviation of duodecimo, a page size (5\"-5.5\" x 7.125\"-7.5\")"
      ],
      "tags": [
        "abbreviation",
        "alt-of",
        "uncountable",
        "usually"
      ]
    },
    {
      "categories": [
        {
          "kind": "other",
          "langcode": "en",
          "name": "Printing",
          "orig": "en:Printing",
          "parents": [],
          "source": "w"
        },
        {
          "_dis": "40 60",
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w+disamb"
        },
        {
          "_dis": "39 61",
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w+disamb"
        },
        {
          "_dis": "36 64",
          "kind": "other",
          "langcode": "en",
          "name": "Book sizes",
          "orig": "en:Book sizes",
          "parents": [],
          "source": "w+disamb"
        },
        {
          "_dis": "42 58",
          "kind": "other",
          "langcode": "en",
          "name": "Paper sizes",
          "orig": "en:Paper sizes",
          "parents": [],
          "source": "w+disamb"
        },
        {
          "_dis": "25 75",
          "kind": "other",
          "langcode": "en",
          "name": "Twelve",
          "orig": "en:Twelve",
          "parents": [],
          "source": "w+disamb"
        }
      ],
      "glosses": [
        "A book size using duodecimo-sized pages."
      ],
      "id": "en-12mo-en-noun-yVfafDd1",
      "links": [
        [
          "printing",
          "printing#Noun"
        ]
      ],
      "raw_glosses": [
        "(printing) A book size using duodecimo-sized pages."
      ],
      "synonyms": [
        {
          "_dis1": "24 76",
          "sense": "book size",
          "word": "D"
        },
        {
          "_dis1": "24 76",
          "sense": "book size",
          "word": "12º"
        },
        {
          "_dis1": "24 76",
          "sense": "book size",
          "word": "twelvemo"
        },
        {
          "_dis1": "24 76",
          "sense": "book size",
          "word": "duodecimo"
        }
      ],
      "tags": [
        "uncountable",
        "usually"
      ],
      "topics": [
        "media",
        "printing",
        "publishing"
      ]
    }
  ],
  "synonyms": [
    {
      "_dis1": "54 46",
      "sense": "paper size",
      "word": "12º"
    },
    {
      "_dis1": "54 46",
      "sense": "paper size",
      "word": "twelvemo"
    },
    {
      "_dis1": "54 46",
      "sense": "paper size",
      "word": "duodecimo"
    }
  ],
  "word": "12mo"
}

{
  "categories": [
    "English countable nouns",
    "English entries with incorrect language header",
    "English lemmas",
    "English nouns",
    "English terms spelled with numbers",
    "English uncountable nouns",
    "Pages with 1 entry",
    "Pages with entries",
    "en:Book sizes",
    "en:Paper sizes",
    "en:Twelve"
  ],
  "etymology_text": "12 + -mo, for a twelfth of a sheet.",
  "forms": [
    {
      "form": "12mos",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "-",
        "2": "s"
      },
      "expansion": "12mo (usually uncountable, plural 12mos)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "alt_of": [
        {
          "extra": "a page size (5\"-5.5\" x 7.125\"-7.5\")",
          "word": "duodecimo"
        }
      ],
      "categories": [
        "English abbreviations"
      ],
      "glosses": [
        "Abbreviation of duodecimo, a page size (5\"-5.5\" x 7.125\"-7.5\")"
      ],
      "links": [
        [
          "duodecimo",
          "duodecimo#English"
        ],
        [
          "page",
          "page"
        ],
        [
          "size",
          "size"
        ]
      ],
      "qualifier": "paper",
      "raw_glosses": [
        "(paper) Abbreviation of duodecimo, a page size (5\"-5.5\" x 7.125\"-7.5\")"
      ],
      "tags": [
        "abbreviation",
        "alt-of",
        "uncountable",
        "usually"
      ]
    },
    {
      "categories": [
        "en:Printing"
      ],
      "glosses": [
        "A book size using duodecimo-sized pages."
      ],
      "links": [
        [
          "printing",
          "printing#Noun"
        ]
      ],
      "raw_glosses": [
        "(printing) A book size using duodecimo-sized pages."
      ],
      "tags": [
        "uncountable",
        "usually"
      ],
      "topics": [
        "media",
        "printing",
        "publishing"
      ]
    }
  ],
  "synonyms": [
    {
      "sense": "paper size",
      "word": "12º"
    },
    {
      "sense": "paper size",
      "word": "twelvemo"
    },
    {
      "sense": "paper size",
      "word": "duodecimo"
    },
    {
      "sense": "book size",
      "word": "D"
    },
    {
      "sense": "book size",
      "word": "12º"
    },
    {
      "sense": "book size",
      "word": "twelvemo"
    },
    {
      "sense": "book size",
      "word": "duodecimo"
    }
  ],
  "word": "12mo"
}