"conchoid" meaning in All languages combined

See conchoid on Wiktionary

Noun [English]

Forms: conchoids [plural]
Etymology: From Latin concha (“mussel”) (from Ancient Greek κόγχη (kónkhē)) + -oid or directly from Ancient Greek κογχοειδής (konkhoeidḗs), referring to the curved outline of a mussel shell or anything in this form. Etymology templates: {{uder|en|la|concha||mussel}} Latin concha (“mussel”), {{uder|en|grc|κόγχη}} Ancient Greek κόγχη (kónkhē), {{suffix|en||oid}} + -oid, {{uder|en|grc|κογχοειδής}} Ancient Greek κογχοειδής (konkhoeidḗs) Head templates: {{en-noun}} conchoid (plural conchoids)
  1. (mathematics, geometry) Any of a family of curves defined as the locus of points p, such that each p is on a line that passes through a given fixed point P and intersects a given curve, C, and the distance from p to the point of intersection with C is a specified constant (note that for nontrivial cases two such points p satisfy the criteria, and the resultant curve has two parts). Categories (topical): Curves, Geometry, Mathematics Translations (any of a certain family of curves): konchoida [feminine] (Czech), конхо́ида (konxóida) [feminine] (Russian), konkoid (Turkish)
    Sense id: en-conchoid-en-noun-hIHqQx2g Categories (other): English entries with incorrect language header, English entries with topic categories using raw markup, English terms suffixed with -oid, English undefined derivations Disambiguation of English entries with incorrect language header: 74 26 Disambiguation of English entries with topic categories using raw markup: 76 24 Disambiguation of English terms suffixed with -oid: 76 24 Disambiguation of English undefined derivations: 75 25 Topics: geometry, mathematics, sciences Disambiguation of 'any of a certain family of curves': 95 5
  2. (geology) A conchoidal fracture in rock. Categories (topical): Geology
    Sense id: en-conchoid-en-noun-AeXume-i Topics: geography, geology, natural-sciences
The following are not (yet) sense-disambiguated
Derived forms: conchoid of de Sluze (english: strictly a cissoid), conchoid of Dürer (english: not actually a conchoid), conchoid of Nicomedes Related terms: conchoidal, cardioid, cissoid, limaçon, strophoid

Inflected forms

Download JSON data for conchoid meaning in All languages combined (6.4kB)

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  "derived": [
    {
      "_dis1": "0 0",
      "english": "strictly a cissoid",
      "word": "conchoid of de Sluze"
    },
    {
      "_dis1": "0 0",
      "english": "not actually a conchoid",
      "word": "conchoid of Dürer"
    },
    {
      "_dis1": "0 0",
      "word": "conchoid of Nicomedes"
    }
  ],
  "etymology_templates": [
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        "5": "mussel"
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      "expansion": "Latin concha (“mussel”)",
      "name": "uder"
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      },
      "expansion": "Ancient Greek κογχοειδής (konkhoeidḗs)",
      "name": "uder"
    }
  ],
  "etymology_text": "From Latin concha (“mussel”) (from Ancient Greek κόγχη (kónkhē)) + -oid or directly from Ancient Greek κογχοειδής (konkhoeidḗs), referring to the curved outline of a mussel shell or anything in this form.",
  "forms": [
    {
      "form": "conchoids",
      "tags": [
        "plural"
      ]
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  ],
  "head_templates": [
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      "args": {},
      "expansion": "conchoid (plural conchoids)",
      "name": "en-noun"
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  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "related": [
    {
      "_dis1": "0 0",
      "word": "conchoidal"
    },
    {
      "_dis1": "0 0",
      "word": "cardioid"
    },
    {
      "_dis1": "0 0",
      "word": "cissoid"
    },
    {
      "_dis1": "0 0",
      "word": "limaçon"
    },
    {
      "_dis1": "0 0",
      "word": "strophoid"
    }
  ],
  "senses": [
    {
      "categories": [
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          "name": "Curves",
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      "examples": [
        {
          "text": "The conchoid of a circle with respect to a point on the circle is a cardioid if the fixed distance is equal to the diameter of the circle."
        },
        {
          "text": "The Conchoid of Nicomedes is the conchoid of a straight line with respect to a point not on the line."
        },
        {
          "text": "1815, Charles Hutton, Pappus, entry in A Philosophical and Mathematical Dictionary, Volume 2, page 147,\nHe next treats of the properties of the Conchoid, which Nicomedes invented for doubling the cube; applying it to the solution of certain problems concerning Inclinations, with the finding of two mean proportionals, and cubes in any proportion whatever."
        },
        {
          "ref": "1982, J. Lee Kavanau, Curves and Symmetry, volume 1, page 3",
          "text": "The classical conchoid construction is a non-orthogonal polar-curvilinear construction in which equal distances along a line are marked off from its point of intersection with a curve for various positions of the line as it rotates about a point.",
          "type": "quotation"
        },
        {
          "ref": "2007, James Stewart, Single Variable Calculus, volume 2, page 662",
          "text": "These curves are called conchoids of Nicomedes after the ancient Greek scholar Nicomedes. He called them conchoids because the shape of their outer branches resembles that of a conch shell or mussel shell.",
          "type": "quotation"
        },
        {
          "ref": "2009, Niccolò Guicciardini, Isaac Newton on Mathematical Certainty and Method, page 68",
          "text": "One of the best choices is the conchoid, according to Newton the simplest curve after the circle.",
          "type": "quotation"
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        "Any of a family of curves defined as the locus of points p, such that each p is on a line that passes through a given fixed point P and intersects a given curve, C, and the distance from p to the point of intersection with C is a specified constant (note that for nontrivial cases two such points p satisfy the criteria, and the resultant curve has two parts)."
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      "raw_glosses": [
        "(mathematics, geometry) Any of a family of curves defined as the locus of points p, such that each p is on a line that passes through a given fixed point P and intersects a given curve, C, and the distance from p to the point of intersection with C is a specified constant (note that for nontrivial cases two such points p satisfy the criteria, and the resultant curve has two parts)."
      ],
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      "translations": [
        {
          "_dis1": "95 5",
          "code": "cs",
          "lang": "Czech",
          "sense": "any of a certain family of curves",
          "tags": [
            "feminine"
          ],
          "word": "konchoida"
        },
        {
          "_dis1": "95 5",
          "code": "ru",
          "lang": "Russian",
          "roman": "konxóida",
          "sense": "any of a certain family of curves",
          "tags": [
            "feminine"
          ],
          "word": "конхо́ида"
        },
        {
          "_dis1": "95 5",
          "code": "tr",
          "lang": "Turkish",
          "sense": "any of a certain family of curves",
          "word": "konkoid"
        }
      ]
    },
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        {
          "kind": "topical",
          "langcode": "en",
          "name": "Geology",
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            "Sciences",
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            "Fundamental"
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          "source": "w"
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        {
          "ref": "1948, Tennessee Valley Authority, “The Hiwassee Valley Projects”, in Technical Report, volume 2, number 5, page 359",
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          "type": "quotation"
        }
      ],
      "glosses": [
        "A conchoidal fracture in rock."
      ],
      "id": "en-conchoid-en-noun-AeXume-i",
      "links": [
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          "geology"
        ],
        [
          "conchoidal",
          "conchoidal"
        ]
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      "raw_glosses": [
        "(geology) A conchoidal fracture in rock."
      ],
      "topics": [
        "geography",
        "geology",
        "natural-sciences"
      ]
    }
  ],
  "wikipedia": [
    "conchoid"
  ],
  "word": "conchoid"
}
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  "categories": [
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    "English lemmas",
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    "English terms derived from Ancient Greek",
    "English terms derived from Latin",
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  "derived": [
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      "english": "strictly a cissoid",
      "word": "conchoid of de Sluze"
    },
    {
      "english": "not actually a conchoid",
      "word": "conchoid of Dürer"
    },
    {
      "word": "conchoid of Nicomedes"
    }
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      "name": "uder"
    }
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  "etymology_text": "From Latin concha (“mussel”) (from Ancient Greek κόγχη (kónkhē)) + -oid or directly from Ancient Greek κογχοειδής (konkhoeidḗs), referring to the curved outline of a mussel shell or anything in this form.",
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      "form": "conchoids",
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      "word": "conchoidal"
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    {
      "word": "cardioid"
    },
    {
      "word": "cissoid"
    },
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      "word": "limaçon"
    },
    {
      "word": "strophoid"
    }
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        {
          "text": "The conchoid of a circle with respect to a point on the circle is a cardioid if the fixed distance is equal to the diameter of the circle."
        },
        {
          "text": "The Conchoid of Nicomedes is the conchoid of a straight line with respect to a point not on the line."
        },
        {
          "text": "1815, Charles Hutton, Pappus, entry in A Philosophical and Mathematical Dictionary, Volume 2, page 147,\nHe next treats of the properties of the Conchoid, which Nicomedes invented for doubling the cube; applying it to the solution of certain problems concerning Inclinations, with the finding of two mean proportionals, and cubes in any proportion whatever."
        },
        {
          "ref": "1982, J. Lee Kavanau, Curves and Symmetry, volume 1, page 3",
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        {
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          "type": "quotation"
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          "text": "One of the best choices is the conchoid, according to Newton the simplest curve after the circle.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "Any of a family of curves defined as the locus of points p, such that each p is on a line that passes through a given fixed point P and intersects a given curve, C, and the distance from p to the point of intersection with C is a specified constant (note that for nontrivial cases two such points p satisfy the criteria, and the resultant curve has two parts)."
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        "(mathematics, geometry) Any of a family of curves defined as the locus of points p, such that each p is on a line that passes through a given fixed point P and intersects a given curve, C, and the distance from p to the point of intersection with C is a specified constant (note that for nontrivial cases two such points p satisfy the criteria, and the resultant curve has two parts)."
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          "text": "Conchoids of sound rock, from a few feet to 20 or more feet in diameter, entirely surrounded by comparatively thin layers of weathered material, were frequently encountered, sometimes in adjacent series.",
          "type": "quotation"
        }
      ],
      "glosses": [
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        "(geology) A conchoidal fracture in rock."
      ],
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  "translations": [
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      "code": "cs",
      "lang": "Czech",
      "sense": "any of a certain family of curves",
      "tags": [
        "feminine"
      ],
      "word": "konchoida"
    },
    {
      "code": "ru",
      "lang": "Russian",
      "roman": "konxóida",
      "sense": "any of a certain family of curves",
      "tags": [
        "feminine"
      ],
      "word": "конхо́ида"
    },
    {
      "code": "tr",
      "lang": "Turkish",
      "sense": "any of a certain family of curves",
      "word": "konkoid"
    }
  ],
  "wikipedia": [
    "conchoid"
  ],
  "word": "conchoid"
}

This page is a part of the kaikki.org machine-readable All languages combined dictionary. This dictionary is based on structured data extracted on 2024-05-03 from the enwiktionary dump dated 2024-05-02 using wiktextract (f4fd8c9 and c9440ce). The data shown on this site has been post-processed and various details (e.g., extra categories) removed, some information disambiguated, and additional data merged from other sources. See the raw data download page for the unprocessed wiktextract data.

If you use this data in academic research, please cite Tatu Ylonen: Wiktextract: Wiktionary as Machine-Readable Structured Data, Proceedings of the 13th Conference on Language Resources and Evaluation (LREC), pp. 1317-1325, Marseille, 20-25 June 2022. Linking to the relevant page(s) under https://kaikki.org would also be greatly appreciated.