"Strain 121" meaning in English

{
  "etymology_text": "From strain and 121, the temperature (in Celsius) at which the organism lives.",
  "head_templates": [
    {
      "args": {},
      "expansion": "Strain 121",
      "name": "en-proper noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "name",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "langcode": "en",
          "name": "Microbiology",
          "orig": "en:Microbiology",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "Geogemma barossii, an archaea, one of the most resilient hyperthermophiles known."
      ],
      "id": "en-Strain_121-en-name-chmHTv4n",
      "links": [
        [
          "microbiology",
          "microbiology"
        ],
        [
          "archaea",
          "archaea"
        ],
        [
          "hyperthermophile",
          "hyperthermophile"
        ]
      ],
      "raw_glosses": [
        "(microbiology) Geogemma barossii, an archaea, one of the most resilient hyperthermophiles known."
      ],
      "topics": [
        "biology",
        "microbiology",
        "natural-sciences"
      ]
    }
  ],
  "word": "Strain 121"
}

{
  "etymology_text": "From strain and 121, the temperature (in Celsius) at which the organism lives.",
  "head_templates": [
    {
      "args": {},
      "expansion": "Strain 121",
      "name": "en-proper noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "name",
  "senses": [
    {
      "categories": [
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English proper nouns",
        "English terms spelled with numbers",
        "English uncountable nouns",
        "Entries missing English vernacular names of taxa",
        "Pages with 1 entry",
        "Pages with entries",
        "en:Microbiology"
      ],
      "glosses": [
        "Geogemma barossii, an archaea, one of the most resilient hyperthermophiles known."
      ],
      "links": [
        [
          "microbiology",
          "microbiology"
        ],
        [
          "archaea",
          "archaea"
        ],
        [
          "hyperthermophile",
          "hyperthermophile"
        ]
      ],
      "raw_glosses": [
        "(microbiology) Geogemma barossii, an archaea, one of the most resilient hyperthermophiles known."
      ],
      "topics": [
        "biology",
        "microbiology",
        "natural-sciences"
      ]
    }
  ],
  "word": "Strain 121"
}