venation

• 名词，指叶脉或血管等脉络的分布与排列系统，常用于植物学（叶脉）和动物学（血管）。

A noun referring to the arrangement or system of veins, such as in a leaf (botany) or in the blood vessels of an animal (zoology).

1. Leaf vein arrangementC2formalscientific

   The pattern or arrangement of veins in a leaf blade.

   叶脉序

   • The venation of a maple leaf is palmate.
   • Botanists study leaf venation to identify plant species.
   • Parallel venation is common in grasses.

   同义词veining

2. Animal vein systemC2formalscientific

   The system or arrangement of veins in the body of an animal.

   静脉系统

   • The venation of an insect's wing is used for classification.
   • The venation of the human circulatory system is complex.
   • Zoologists examine the venation in different species.