"pseud-" meaning in French

{
  "etymology_templates": [
    {
      "args": {
        "1": "fr",
        "2": "grc",
        "3": "ψευδ-"
      },
      "expansion": "Borrowed from Ancient Greek ψευδ- (pseud-)",
      "name": "bor+"
    }
  ],
  "etymology_text": "Borrowed from Ancient Greek ψευδ- (pseud-).",
  "head_templates": [
    {
      "args": {
        "1": "fr",
        "2": "prefix"
      },
      "expansion": "pseud-",
      "name": "head"
    }
  ],
  "lang": "French",
  "lang_code": "fr",
  "pos": "prefix",
  "senses": [
    {
      "alt_of": [
        {
          "extra": "only used before a vowel",
          "word": "pseudo-"
        }
      ],
      "categories": [
        {
          "kind": "other",
          "name": "French entries with incorrect language header",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 3 entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "alternative form of pseudo- (only used before a vowel)"
      ],
      "id": "en-pseud--fr-prefix-B1UbFm5Q",
      "links": [
        [
          "pseudo-",
          "pseudo-#French"
        ]
      ],
      "raw_glosses": [
        "(rare) alternative form of pseudo- (only used before a vowel)"
      ],
      "tags": [
        "alt-of",
        "alternative",
        "morpheme",
        "rare"
      ]
    }
  ],
  "word": "pseud-"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "fr",
        "2": "grc",
        "3": "ψευδ-"
      },
      "expansion": "Borrowed from Ancient Greek ψευδ- (pseud-)",
      "name": "bor+"
    }
  ],
  "etymology_text": "Borrowed from Ancient Greek ψευδ- (pseud-).",
  "head_templates": [
    {
      "args": {
        "1": "fr",
        "2": "prefix"
      },
      "expansion": "pseud-",
      "name": "head"
    }
  ],
  "lang": "French",
  "lang_code": "fr",
  "pos": "prefix",
  "senses": [
    {
      "alt_of": [
        {
          "extra": "only used before a vowel",
          "word": "pseudo-"
        }
      ],
      "categories": [
        "French entries with incorrect language header",
        "French lemmas",
        "French prefixes",
        "French terms borrowed from Ancient Greek",
        "French terms derived from Ancient Greek",
        "French terms with rare senses",
        "Pages with 3 entries",
        "Pages with entries"
      ],
      "glosses": [
        "alternative form of pseudo- (only used before a vowel)"
      ],
      "links": [
        [
          "pseudo-",
          "pseudo-#French"
        ]
      ],
      "raw_glosses": [
        "(rare) alternative form of pseudo- (only used before a vowel)"
      ],
      "tags": [
        "alt-of",
        "alternative",
        "morpheme",
        "rare"
      ]
    }
  ],
  "word": "pseud-"
}