sulcation

n. （互相平行的）槽（或深沟）

词形变化

sulcations 复数 sulcations

释义与例句

n.
  1. 1.

    A channel or furrow.

    可数 不可数
  2. 2.

    Markings resembling channels or furrows, especially in shells, fossils, etc.

    可数 不可数

    The ornamentation of the shell is a character of considerable palaeontological importance. . . . The types of ornamentation are two; longitudinal striation, and transverse sulcation conformable to the shape of the aperture.

    [T]he presence of sulcation in the brow horns of all the Arrhinoceratops specimens known at the present time suggests a certain constancy in this genus.

  3. 3.

    The development of or resulting formations of sulci in a brain cortex.

    可数 不可数 医学