葉脈序

叶脉序
yèmàixù
  1. leaf venation (botany)
  2. the pattern of veins on a leaf, characteristic of each species

CEDICT

Entry Composition

1 葉脈 yèmài venation (pattern of veins on a leaf)
2 序 xù
  1. (bound form) order; sequence
  2. (bound form) introductory; initial
  3. preface