"Stenian" meaning in English

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "grc",
        "3": "στενός",
        "4": "",
        "5": "narrow"
      },
      "expansion": "Ancient Greek στενός (stenós, “narrow”)",
      "name": "uder"
    }
  ],
  "etymology_text": "From Ancient Greek στενός (stenós, “narrow”).",
  "head_templates": [
    {
      "args": {},
      "expansion": "Stenian",
      "name": "en-proper noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "name",
  "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 undefined derivations",
          "parents": [
            "Undefined derivations",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        }
      ],
      "examples": [
        {
          "text": "The supercontinent Rodinia assembled during the Stenian.",
          "type": "example"
        }
      ],
      "glosses": [
        "The final geologic period in the Mesoproterozoic Era, from 1200 million to 1000 million years ago."
      ],
      "id": "en-Stenian-en-name-vDgNd5f9",
      "links": [
        [
          "geologic",
          "geologic"
        ],
        [
          "period",
          "period"
        ]
      ],
      "wikipedia": [
        "Stenian"
      ]
    }
  ],
  "word": "Stenian"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "grc",
        "3": "στενός",
        "4": "",
        "5": "narrow"
      },
      "expansion": "Ancient Greek στενός (stenós, “narrow”)",
      "name": "uder"
    }
  ],
  "etymology_text": "From Ancient Greek στενός (stenós, “narrow”).",
  "head_templates": [
    {
      "args": {},
      "expansion": "Stenian",
      "name": "en-proper noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "name",
  "senses": [
    {
      "categories": [
        "English entries with incorrect language header",
        "English lemmas",
        "English proper nouns",
        "English terms derived from Ancient Greek",
        "English terms with usage examples",
        "English uncountable nouns",
        "English undefined derivations",
        "Pages with 1 entry"
      ],
      "examples": [
        {
          "text": "The supercontinent Rodinia assembled during the Stenian.",
          "type": "example"
        }
      ],
      "glosses": [
        "The final geologic period in the Mesoproterozoic Era, from 1200 million to 1000 million years ago."
      ],
      "links": [
        [
          "geologic",
          "geologic"
        ],
        [
          "period",
          "period"
        ]
      ],
      "wikipedia": [
        "Stenian"
      ]
    }
  ],
  "word": "Stenian"
}