conchoidal
Of or pertaining to a conchoidOf or pertaining to a conchoid; that may be defined as a conchoid.
Meaning
3 sensesOf or pertaining to a conchoid; that may be defined as a conchoid.
c. 1695, Isaac Newton, 1976, D. T. Whiteside (editor), The Mathematical Papers of Isaac Newton, Volume 7: 1691-1695, page 621, […] a conchoidal hyperbola with an oval at its convexity.
Irregular, with planar, concentric curves, similar to those on a mussel shell.
1821, Coal, entry in Andrew Ure, A Dictionary of Chemistry on the Basis of Mr Nicholson's, unnumbered page, It is distinguished by its splendent lustre and conchoidal fracture.
That fractures with planar concentric curves (e.g., as flint, chert or obsidian).
Origin
From conchoid + -al.From conchoid + -al.
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Forms
more conchoidal, most conchoidal| Comparative | more conchoidal Lesson |
|---|---|
| Superlative | most conchoidal Lesson |
regular
Word family
2 related wordsLessons for this word
2 lessons- A2Comparatives — Because it has a comparative form
- A2Superlatives — Because it has a superlative form
See also
neighbours in the dictionaryDictionary text adapted from Wiktionary (Wiktionary contributors, CC BY-SA 4.0) and Open English WordNet / Princeton WordNet (CC BY 4.0, WordNet License); shared under CC BY-SA 4.0. Example sentences and recordings are credited where they appear.