venation

ve·na·tion  (v-nshn, v-)

n.

1. Distribution or arrangement of a system of veins, as in a leaf blade or the wing of an insect.

2. The veins of such a system considered as a group.

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ve·nation·al adj.

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venation  (v-nshn)

1. The distribution or arrangement of a system of veins, as in an insect's wing or a leaf blade. Patterns of venation in insect wings are often used to identify and differentiate species. In angiosperm plants, the venation of eudicot and magnoliid leaves is generally netted or reticulate, with smaller veins branching out from larger ones in a pinnate or palmate pattern, while that of monocots is parallel, with many veins of similar size running parallel to each other along the length of the plant part. These parallel veins are connected to each other by much smaller cross veins.

2. The veins of such a system considered as a group.

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venation

Archaic. the sport or occupation of hunting. — venatic, venatical, venational, adj.

See also: Hunting

Thesaurus

Noun	1.	venation - (botany) the arrangement of veins in a leaf phytology, botany - the branch of biology that studies plants arrangement - an orderly grouping (of things or persons) considered as a unit; the result of arranging; "a flower arrangement" foliage, leaf, leafage - the main organ of photosynthesis and transpiration in higher plants
	2.	venation - (zoology) the system of venous blood vessels in an animal venous blood system system - a group of physiologically or anatomically related organs or parts; "the body has a system of organs for digestion" cardiovascular system, circulatory system - the organs and tissues involved in circulating blood and lymph through the body zoological science, zoology - the branch of biology that studies animals