Etymology of arctan

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

{
  "templates": [
    {
      "name": "prefix",
      "args": {
        "1": "en",
        "2": "arc",
        "3": "mul:tan"
      },
      "expansion": "arc- + translingual tan"
    }
  ],
  "links": [
    [
      "arc-",
      "arc-#English"
    ],
    [
      "tan",
      "tan#Translingual"
    ]
  ],
  "references": [],
  "descendants": [],
  "lexical": [
    {
      "pos": "noun",
      "glosses": [
        "Abbreviation of arctangent."
      ],
      "tags": [
        "abbreviation",
        "alt-of"
      ],
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