"delta glider" meaning in English

{
  "etymology_text": "From the shape of the Greek letter delta (Δ); see delta wing.",
  "forms": [
    {
      "form": "delta gliders",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "delta glider (plural delta gliders)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
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          "kind": "other",
          "name": "English terms with non-redundant non-automated sortkeys",
          "parents": [
            "Terms with non-redundant non-automated sortkeys",
            "Entry maintenance"
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          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
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        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Aircraft",
          "orig": "en:Aircraft",
          "parents": [
            "Aviation",
            "Technology",
            "Aeronautics",
            "Transport",
            "All topics",
            "Sciences",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "examples": [
        {
          "ref": "1953, J. H. Stevens, The Shape of the Aeroplane:",
          "text": "After extensive wind-tunnel work he evolved a series of designs, starting with a very advanced delta glider and culminating in a supersonic aeroplane with a revolutionary coal-burning ram-jet.",
          "type": "quote"
        },
        {
          "ref": "1987, Clarence J. Geiger, Strangled Infant: The Boeing X-20A Dyna-Soar:",
          "text": "In response, NACA Director Hugh L. Dryden formed a \"Round Three\" […] steering committee which evaluated the various projects and then recommended to the Air Force, in September 1957, that the service sponsor development of a flat-bottom hypersonic delta glider.",
          "type": "quote"
        }
      ],
      "glosses": [
        "a gliding aircraft with a delta wing"
      ],
      "id": "en-delta_glider-en-noun-SQhz87LJ",
      "links": [
        [
          "gliding",
          "glide"
        ],
        [
          "aircraft",
          "aircraft"
        ],
        [
          "delta wing",
          "delta wing"
        ]
      ]
    }
  ],
  "word": "delta glider"
}

{
  "etymology_text": "From the shape of the Greek letter delta (Δ); see delta wing.",
  "forms": [
    {
      "form": "delta gliders",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "delta glider (plural delta gliders)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "English terms derived from the shape of letters",
        "English terms with non-redundant non-automated sortkeys",
        "English terms with quotations",
        "Pages with 1 entry",
        "Pages with entries",
        "Quotation templates to be cleaned",
        "en:Aircraft"
      ],
      "examples": [
        {
          "ref": "1953, J. H. Stevens, The Shape of the Aeroplane:",
          "text": "After extensive wind-tunnel work he evolved a series of designs, starting with a very advanced delta glider and culminating in a supersonic aeroplane with a revolutionary coal-burning ram-jet.",
          "type": "quote"
        },
        {
          "ref": "1987, Clarence J. Geiger, Strangled Infant: The Boeing X-20A Dyna-Soar:",
          "text": "In response, NACA Director Hugh L. Dryden formed a \"Round Three\" […] steering committee which evaluated the various projects and then recommended to the Air Force, in September 1957, that the service sponsor development of a flat-bottom hypersonic delta glider.",
          "type": "quote"
        }
      ],
      "glosses": [
        "a gliding aircraft with a delta wing"
      ],
      "links": [
        [
          "gliding",
          "glide"
        ],
        [
          "aircraft",
          "aircraft"
        ],
        [
          "delta wing",
          "delta wing"
        ]
      ]
    }
  ],
  "word": "delta glider"
}