Word.ws English Dictionary

conchoid

conchoid noun: 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).

conchoid: any of a family of curves defined as the locus of points p, such that each p is on a line that...
Image: Tosha, Public domain, via Wikimedia Commons

Noun

conchoid (plural conchoids)

  1. 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).
    • 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.
    • The Conchoid of Nicomedes is the conchoid of a straight line with respect to a point not on the line.
  2. A conchoidal fracture in rock.
    • 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.1948, Tennessee Valley Authority, “The Hiwassee Valley Projects”, in Technical Report, volume 2, number 5, page 359

conchoid meaning in Tamil

conchoid in Tamil

சங்குரு

Examples of conchoid in a sentence

  • These curves are called conchoids of Nicomedes after the ancient Greek scholar Nicomedes.2007, James Stewart, Single Variable Calculus, volume 2, page 662:
  • One of the best choices is the conchoid, according to Newton the simplest curve after the circle.2009, Niccolò Guicciardini, Isaac Newton on Mathematical Certainty and Method, page 68:

Forms of conchoid

pluralconchoids

Origin of conchoid

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. By surface analysis, conch + -oid.

Words formed from conchoid

Questions about conchoid

What does conchoid mean?
Conchoid means 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).
What is conchoid in Tamil?
Conchoid in Tamil is சங்குரு. See Conchoid meaning in Tamil.
How do you use conchoid in a sentence?
These curves are called conchoids of Nicomedes after the ancient Greek scholar Nicomedes.
What part of speech is conchoid?
Conchoid is a noun.
What is the plural of conchoid?
The plural of conchoid is conchoids.

Words near conchoid in the dictionary

  1. conchites
  2. conchitic
  3. concho
  4. Concho County
  5. conchocelis
  6. conchoid
  7. conchoidal
  8. conchoidally
  9. conchoids
  10. conchological
  11. conchologically

Source and license

Adapted from Wiktionary: conchoid (page history and authors); conchoid (Tamil Wiktionary) (page history and authors). Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws reformatted the entry and added links. Wiktionary data of 2026-09-02.

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Pronunciation audio from Wikimedia Commons, each file under its own free license: LL-Q1860 (eng)-Flame, not lame-conchoid.wav.

Cite this entry: “conchoid.” Word.ws, https://word.ws/conchoid. Based on Wiktionary, CC BY-SA 4.0.