Definition of venation in English:

venation

noun

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

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

Origin

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

Pronunciation

venation

/vɪˈneɪʃ(ə)n/