Noun venation has 2 senses
  1. venation - (botany) the arrangement of veins in a leaf
    --1 is a kind of
    arrangement
    --1 is a part of leaf, leafage, foliage
  2. venation, venous blood system - (zoology) the system of venous blood vessels in an animal
    --2 is a kind of system
    --2 is a part of circulatory system, cardiovascular system
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