Definition of venation in English:

venation

Syllabification: ve·na·tion
Pronunciation: /vēˈnāSHən
 
/

noun

Biology
1The arrangement of veins in a leaf or in an insect’s wing.
More example sentences
  • 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.
  • Leaves have parallel venation, with veins converging at the tip of the leaf.
1.1The system of venous blood vessels in an animal.

Origin

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

Derivatives

venational

adjective
More example sentences
  • Most Paleozoic insects are known only by their wing venation since wings are the least degradable parts of insects, so phylogenetic schemes will rely on venational characters.
  • They differ from some of the more slender Palaeodictyoptera of the time, which they otherwise resembled, chiefly in venational characters and in possessing a long caudal style.

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