Etymology of octad

Raw extraction fields are retained for auditing. Their order does not establish ancestry.

{
  "templates": [
    {
      "name": "confix",
      "args": {
        "1": "en",
        "2": "oct",
        "3": "-ad#Etymology_1"
      },
      "expansion": "oct- + -ad"
    }
  ],
  "links": [
    [
      "oct-",
      "oct-#English"
    ],
    [
      "-ad",
      "-ad#Etymology_1"
    ]
  ],
  "references": [],
  "descendants": [],
  "lexical": [
    {
      "pos": "noun",
      "glosses": [
        "A group of eight things.",
        "hundred million = myriad myriad; 100,000,000 = 10⁸"
      ],
      "tags": [
        "historical"
      ],
      "recordId": "a1e805fc38bafaf8a6f09d60435662dd005d6771971061ad58b450e970032d0d",
      "rawRecordSha256": "56ca5bc9d9594b4a625090ee32807d87a39460a28452d1697638f9010e035db4",
      "sourceRecordOrdinal": 553641
    }
  ],
  "omittedAuxiliaryFields": {
    "templates": 0,
    "links": 0,
    "references": 0,
    "descendants": 0,
    "lexicalRecords": 0,
    "lexicalSenses": 0,
    "glosses": 0
  }
}