conchoidal

形容词 adj.
中文释义
英 /kɒŋˈkɔɪ.dəl/    美 /kɑŋˈkɔɪ.dəl/

英文释义

形容词 adj.
  1. Of 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.
  2. 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.
  3. That fractures with planar concentric curves (e.g., as flint, chert or obsidian).
    — 1821, Focus of Philosophy, Science and Art, Volume 1, Issues 1-4, page 74, The customary transitions of pitchstone are, into Chalcedony, Chert, Semi-opal; also into a substance resembling conchoidal shining jasper, found in clay strata, entangled in trap, or volcanic rock; and lastly, into Trap.

词形变化

more conchoidal comparative most conchoidal superlative

词汇关系

衍生词
conchoidally subconchoidal

词源

Etymology tree
English conchoid
Proto-Indo-European *h₂el-der.?
Proto-Italic *-ālis
Latin -ālisbor.
Old French -albor.
▲
Latin -ālis
Old French -elbor.
▲
Latin -ālisbor.
Middle English -al
English -al
English conchoidal
From conchoid + -al.
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