"D-" meaning in Translingual

{
  "antonyms": [
    {
      "word": "L-"
    }
  ],
  "etymology_links": [
    [
      "d-glyceraldehyde",
      "d-glyceraldehyde#English"
    ],
    [
      "(+)-glyceraldehyde",
      "(+)-glyceraldehyde#English"
    ]
  ],
  "etymology_number": "1",
  "etymology_text": "From d-glyceraldehyde, old name of (+)-glyceraldehyde.",
  "head_templates": [
    {
      "args": {
        "1": "mul",
        "2": "prefix"
      },
      "expansion": "D-",
      "name": "head"
    }
  ],
  "lang": "Translingual",
  "lang_code": "mul",
  "pos": "prefix",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "langcode": "mul",
          "name": "Chemistry",
          "orig": "mul:Chemistry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English links with manual fragments",
          "parents": [],
          "source": "w+disamb"
        },
        {
          "_dis": "71 29",
          "kind": "other",
          "name": "Pages with 2 entries",
          "parents": [],
          "source": "w+disamb"
        },
        {
          "_dis": "67 33",
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w+disamb"
        },
        {
          "_dis": "58 42",
          "kind": "other",
          "name": "Translingual entries with incorrect language header",
          "parents": [],
          "source": "w+disamb"
        }
      ],
      "coordinate_terms": [
        {
          "word": "DL-"
        }
      ],
      "glosses": [
        "one of two mirror-image forms of an isomer (enantiomer) derived from (R)-glyceraldehyde. Written in small caps."
      ],
      "id": "en-D--mul-prefix-d21RpOJc",
      "links": [
        [
          "chemistry",
          "chemistry"
        ],
        [
          "isomer",
          "isomer"
        ],
        [
          "enantiomer",
          "enantiomer"
        ],
        [
          "glyceraldehyde",
          "glyceraldehyde"
        ]
      ],
      "raw_glosses": [
        "(chemistry) one of two mirror-image forms of an isomer (enantiomer) derived from (R)-glyceraldehyde. Written in small caps."
      ],
      "related": [
        {
          "word": "d-"
        },
        {
          "word": "l-"
        },
        {
          "word": "R-"
        },
        {
          "word": "S-"
        },
        {
          "alt": "RS",
          "word": "-"
        }
      ],
      "tags": [
        "morpheme"
      ],
      "topics": [
        "chemistry",
        "natural-sciences",
        "physical-sciences"
      ]
    }
  ],
  "word": "D-"
}

{
  "etymology_links": [
    [
      "deca-",
      "deca-#English"
    ],
    [
      "deka-",
      "deka-#English"
    ],
    [
      "decas",
      "decas#Latin"
    ],
    [
      "δέκα",
      "δέκα#Ancient_Greek"
    ]
  ],
  "etymology_number": "2",
  "etymology_templates": [
    {
      "args": {
        "1": "mul",
        "2": "fr",
        "3": "-"
      },
      "expansion": "French",
      "name": "der"
    },
    {
      "args": {
        "1": "mul",
        "2": "la",
        "3": "decas"
      },
      "expansion": "Latin decas",
      "name": "der"
    },
    {
      "args": {
        "1": "mul",
        "2": "grc",
        "3": "δέκα",
        "4": "",
        "5": "10"
      },
      "expansion": "Ancient Greek δέκα (déka, “10”)",
      "name": "der"
    }
  ],
  "etymology_text": "From deca-/deka-. From French SI metric system origins. From Latin decas, from Ancient Greek δέκα (déka, “10”).",
  "head_templates": [
    {
      "args": {
        "1": "mul",
        "2": "prefix"
      },
      "expansion": "D-",
      "name": "head"
    }
  ],
  "lang": "Translingual",
  "lang_code": "mul",
  "pos": "prefix",
  "senses": [
    {
      "alt_of": [
        {
          "extra": "deca-",
          "word": "da-"
        }
      ],
      "categories": [
        {
          "kind": "other",
          "langcode": "mul",
          "name": "Metrology",
          "orig": "mul:Metrology",
          "parents": [],
          "source": "w"
        }
      ],
      "coordinate_terms": [
        {
          "alt": "deci-",
          "word": "d-"
        }
      ],
      "glosses": [
        "Nonstandard form of da- (“deca-”)"
      ],
      "id": "en-D--mul-prefix-6ueZmYKt",
      "links": [
        [
          "metrology",
          "metrology"
        ],
        [
          "da-",
          "da-#Translingual"
        ]
      ],
      "raw_glosses": [
        "(metrology) Nonstandard form of da- (“deca-”)"
      ],
      "synonyms": [
        {
          "word": "Da-"
        },
        {
          "word": "DA-"
        },
        {
          "word": "dk-"
        },
        {
          "word": "Dk-"
        },
        {
          "word": "DK-"
        }
      ],
      "tags": [
        "alt-of",
        "morpheme",
        "nonstandard"
      ],
      "topics": [
        "metrology"
      ]
    }
  ],
  "word": "D-"
}

{
  "antonyms": [
    {
      "word": "L-"
    }
  ],
  "categories": [
    "English links with manual fragments",
    "Pages with 2 entries",
    "Pages with entries",
    "Translingual entries with incorrect language header",
    "Translingual lemmas",
    "Translingual prefixes",
    "Translingual terms derived from Ancient Greek",
    "Translingual terms derived from French",
    "Translingual terms derived from Latin"
  ],
  "coordinate_terms": [
    {
      "word": "DL-"
    }
  ],
  "etymology_links": [
    [
      "d-glyceraldehyde",
      "d-glyceraldehyde#English"
    ],
    [
      "(+)-glyceraldehyde",
      "(+)-glyceraldehyde#English"
    ]
  ],
  "etymology_number": "1",
  "etymology_text": "From d-glyceraldehyde, old name of (+)-glyceraldehyde.",
  "head_templates": [
    {
      "args": {
        "1": "mul",
        "2": "prefix"
      },
      "expansion": "D-",
      "name": "head"
    }
  ],
  "lang": "Translingual",
  "lang_code": "mul",
  "pos": "prefix",
  "related": [
    {
      "word": "d-"
    },
    {
      "word": "l-"
    },
    {
      "word": "R-"
    },
    {
      "word": "S-"
    },
    {
      "alt": "RS",
      "word": "-"
    }
  ],
  "senses": [
    {
      "categories": [
        "mul:Chemistry"
      ],
      "glosses": [
        "one of two mirror-image forms of an isomer (enantiomer) derived from (R)-glyceraldehyde. Written in small caps."
      ],
      "links": [
        [
          "chemistry",
          "chemistry"
        ],
        [
          "isomer",
          "isomer"
        ],
        [
          "enantiomer",
          "enantiomer"
        ],
        [
          "glyceraldehyde",
          "glyceraldehyde"
        ]
      ],
      "raw_glosses": [
        "(chemistry) one of two mirror-image forms of an isomer (enantiomer) derived from (R)-glyceraldehyde. Written in small caps."
      ],
      "tags": [
        "morpheme"
      ],
      "topics": [
        "chemistry",
        "natural-sciences",
        "physical-sciences"
      ]
    }
  ],
  "word": "D-"
}

{
  "categories": [
    "Pages with 2 entries",
    "Pages with entries",
    "Translingual entries with incorrect language header",
    "Translingual lemmas",
    "Translingual prefixes",
    "Translingual terms derived from Ancient Greek",
    "Translingual terms derived from French",
    "Translingual terms derived from Latin"
  ],
  "etymology_links": [
    [
      "deca-",
      "deca-#English"
    ],
    [
      "deka-",
      "deka-#English"
    ],
    [
      "decas",
      "decas#Latin"
    ],
    [
      "δέκα",
      "δέκα#Ancient_Greek"
    ]
  ],
  "etymology_number": "2",
  "etymology_templates": [
    {
      "args": {
        "1": "mul",
        "2": "fr",
        "3": "-"
      },
      "expansion": "French",
      "name": "der"
    },
    {
      "args": {
        "1": "mul",
        "2": "la",
        "3": "decas"
      },
      "expansion": "Latin decas",
      "name": "der"
    },
    {
      "args": {
        "1": "mul",
        "2": "grc",
        "3": "δέκα",
        "4": "",
        "5": "10"
      },
      "expansion": "Ancient Greek δέκα (déka, “10”)",
      "name": "der"
    }
  ],
  "etymology_text": "From deca-/deka-. From French SI metric system origins. From Latin decas, from Ancient Greek δέκα (déka, “10”).",
  "head_templates": [
    {
      "args": {
        "1": "mul",
        "2": "prefix"
      },
      "expansion": "D-",
      "name": "head"
    }
  ],
  "lang": "Translingual",
  "lang_code": "mul",
  "pos": "prefix",
  "senses": [
    {
      "alt_of": [
        {
          "extra": "deca-",
          "word": "da-"
        }
      ],
      "categories": [
        "Translingual nonstandard forms",
        "mul:Metrology"
      ],
      "coordinate_terms": [
        {
          "alt": "deci-",
          "word": "d-"
        }
      ],
      "glosses": [
        "Nonstandard form of da- (“deca-”)"
      ],
      "links": [
        [
          "metrology",
          "metrology"
        ],
        [
          "da-",
          "da-#Translingual"
        ]
      ],
      "raw_glosses": [
        "(metrology) Nonstandard form of da- (“deca-”)"
      ],
      "synonyms": [
        {
          "word": "Da-"
        },
        {
          "word": "DA-"
        },
        {
          "word": "dk-"
        },
        {
          "word": "Dk-"
        },
        {
          "word": "DK-"
        }
      ],
      "tags": [
        "alt-of",
        "morpheme",
        "nonstandard"
      ],
      "topics": [
        "metrology"
      ]
    }
  ],
  "word": "D-"
}