"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": "sm/sek",
      "tags": [
        "romanization"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "",
        "2": "m-in-p",
        "3": "-"
      },
      "expansion": "см/сек • (sm/sek) m inan pl (indeclinable)",
      "name": "ru-noun"
    }
  ],
  "lang": "Russian",
  "lang_code": "ru",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "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": "sm/sek",
      "tags": [
        "romanization"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "",
        "2": "m-in-p",
        "3": "-"
      },
      "expansion": "см/сек • (sm/sek) m inan pl (indeclinable)",
      "name": "ru-noun"
    }
  ],
  "lang": "Russian",
  "lang_code": "ru",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "Russian abbreviations",
        "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",
        "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"
}