Definition of venation in English:

venation

noun

Biology
  • 1The arrangement of veins in a leaf or in an insect's wing.

    • ‘Most Paleozoic insects are known only by their wing venation since wings are the least degradable parts of insects.’
    • ‘They produced several types of foliage all characterized by pinnate leaves with open dichotomous venation.’
    • ‘Leaves have parallel venation, with veins converging at the tip of the leaf.’
    • ‘The medium green colored leaves are long and linear with parallel venation.’
    • ‘Reticulate leaf venation may also provide physiological advantages in forest understories.’
    1. 1.1The system of venous blood vessels in an animal.

Origin

Mid 17th century: from Latin vena vein + -ation.

Pronunciation:

venation

/vēˈnāSHən/