conchoidal

a. 贝壳状的 [医] 甲状的, 甲介形的

发音

UK /kɒŋˈkɔɪ.dəl/
US /kɑŋˈkɔɪ.dəl/

词形变化

more conchoidal 比较级 most conchoidal 最高级

释义与例句

adj.
  1. 1.

    Of or pertaining to a conchoid; that may be defined as a conchoid.

    数学
  2. 2.

    Irregular, with planar, concentric curves, similar to those on a mussel shell.

    化学 地质

    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. 3.

    That fractures with planar concentric curves (e.g., as flint, chert or obsidian).

    化学 地质

    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.

词源

From conchoid + -al.

来源：wiktionary