Related formsve·na·tion·al, adjective
Examples from the Web for venation
The compound leaves correspond to these modes of venation; they are either pinnately or palmately compound.Outlines of Lessons in Botany, Part I; From Seed to Leaf|Jane H. Newell
Remove all or nearly all the scales from a wing and note the arrangement of the veins (venation).Elementary Zoology, Second Edition|Vernon L. Kellogg
The venation is peculiar, and the disposition of the sori depends mainly on the peculiarities of the venation.Beautiful Ferns|Daniel Cady Eaton
It is not in all cases easy to trace the origin and true nature of the ascidium, as the venation is sometimes obscure.Vegetable Teratology|Maxwell T. Masters
The venation is useful as pointing out the number of leaves which constitute a gamosepalous calyx.