"algæcide" meaning in English

{
  "forms": [
    {
      "form": "algæcides",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "~"
      },
      "expansion": "algæcide (countable and uncountable, plural algæcides)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "alt_of": [
        {
          "word": "algicide"
        }
      ],
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        }
      ],
      "examples": [
        {
          "ref": "1918, Stephen DeM. Gage, Journal of the Boston Society of Civil Engineers, page 249:",
          "text": "The effect of copper as an algæcide is well known and may be a contributing factor, but the more thorough and more frequent cleaning which these pools receive must also be taken into consideration in the interpretation of this apparent phenomena.",
          "type": "quote"
        }
      ],
      "glosses": [
        "Archaic form of algicide."
      ],
      "id": "en-algæcide-en-noun-l3iHwunn",
      "links": [
        [
          "algicide",
          "algicide#English"
        ]
      ],
      "tags": [
        "alt-of",
        "archaic",
        "countable",
        "uncountable"
      ]
    }
  ],
  "word": "algæcide"
}

{
  "forms": [
    {
      "form": "algæcides",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "~"
      },
      "expansion": "algæcide (countable and uncountable, plural algæcides)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "alt_of": [
        {
          "word": "algicide"
        }
      ],
      "categories": [
        "English archaic forms",
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English nouns",
        "English terms spelled with Æ",
        "English terms with quotations",
        "English uncountable nouns",
        "Pages with 1 entry",
        "Pages with entries"
      ],
      "examples": [
        {
          "ref": "1918, Stephen DeM. Gage, Journal of the Boston Society of Civil Engineers, page 249:",
          "text": "The effect of copper as an algæcide is well known and may be a contributing factor, but the more thorough and more frequent cleaning which these pools receive must also be taken into consideration in the interpretation of this apparent phenomena.",
          "type": "quote"
        }
      ],
      "glosses": [
        "Archaic form of algicide."
      ],
      "links": [
        [
          "algicide",
          "algicide#English"
        ]
      ],
      "tags": [
        "alt-of",
        "archaic",
        "countable",
        "uncountable"
      ]
    }
  ],
  "word": "algæcide"
}