"см/сек" meaning in Russian

{
  "etymology_templates": [
    {
      "args": {
        "1": "ru",
        "2": "сантиме́тров в секу́нду"
      },
      "expansion": "Abbreviation of сантиме́тров в секу́нду (santimétrov v sekúndu)",
      "name": "abbrev"
    }
  ],
  "etymology_text": "Abbreviation of сантиме́тров в секу́нду (santimétrov v sekúndu).",
  "forms": [
    {
      "form": "сек",
      "tags": [
        "canonical"
      ]
    },
    {
      "form": "sek",
      "tags": [
        "romanization"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "",
        "2": "m-in-p",
        "3": "-"
      },
      "expansion": "сек • (sek) m inan pl (indeclinable)",
      "name": "ru-noun"
    }
  ],
  "lang": "Russian",
  "lang_code": "ru",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Russian entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Russian links with redundant wikilinks",
          "parents": [
            "Links with redundant wikilinks",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Russian pluralia tantum",
          "parents": [
            "Pluralia tantum",
            "Nouns",
            "Lemmas"
          ],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "ru",
          "name": "Units of measure",
          "orig": "ru:Units of measure",
          "parents": [
            "Metrology",
            "Quantity",
            "Applied sciences",
            "Mathematics",
            "Sciences",
            "Formal sciences",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "cm/s, centimeters per second"
      ],
      "id": "en-см/сек-ru-noun-mNsVkC8F",
      "links": [
        [
          "cm/s",
          "cm/s"
        ],
        [
          "centimeters",
          "centimeters"
        ],
        [
          "second",
          "second"
        ]
      ],
      "tags": [
        "indeclinable"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "[sənʲtʲɪˈmʲetrəf f‿sʲɪˈkundʊ]"
    }
  ],
  "word": "см/сек"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "ru",
        "2": "сантиме́тров в секу́нду"
      },
      "expansion": "Abbreviation of сантиме́тров в секу́нду (santimétrov v sekúndu)",
      "name": "abbrev"
    }
  ],
  "etymology_text": "Abbreviation of сантиме́тров в секу́нду (santimétrov v sekúndu).",
  "forms": [
    {
      "form": "сек",
      "tags": [
        "canonical"
      ]
    },
    {
      "form": "sek",
      "tags": [
        "romanization"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "",
        "2": "m-in-p",
        "3": "-"
      },
      "expansion": "сек • (sek) m inan pl (indeclinable)",
      "name": "ru-noun"
    }
  ],
  "lang": "Russian",
  "lang_code": "ru",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "Pages with 1 entry",
        "Pages with entries",
        "Russian abbreviations",
        "Russian entries with incorrect language header",
        "Russian inanimate nouns",
        "Russian indeclinable nouns",
        "Russian lemmas",
        "Russian links with redundant wikilinks",
        "Russian masculine nouns",
        "Russian nouns",
        "Russian pluralia tantum",
        "Russian terms with IPA pronunciation",
        "Russian terms with redundant head parameter",
        "ru:Units of measure"
      ],
      "glosses": [
        "cm/s, centimeters per second"
      ],
      "links": [
        [
          "cm/s",
          "cm/s"
        ],
        [
          "centimeters",
          "centimeters"
        ],
        [
          "second",
          "second"
        ]
      ],
      "tags": [
        "indeclinable"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "[sənʲtʲɪˈmʲetrəf f‿sʲɪˈkundʊ]"
    }
  ],
  "word": "см/сек"
}