Zoology: General

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venation

A Dictionary of Biology | 2004 | Copyright

venation
1. The arrangement of veins (vascular bundles) in a leaf. The leaves of dicotyledons have a central main vein (midrib) with side branches that themselves further subdivide to form a network (net or reticulate venation). The leaves of monocotyledons have parallel veins (parallel venation).

2. The arrangement of the veins in an insect's wing, which is often important in classification.

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venation

The Oxford Pocket Dictionary of Current English | 2009 | Copyright

ve·na·tion / vēˈnāshən/ • n. Biol. the arrangement of veins in a leaf or in an insect's wing. ∎ the system of venous blood vessels in an animal. DERIVATIVES: ve·na·tion·al / -shənl/ adj.

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"venation." The Oxford Pocket Dictionary of Current English. 2009. Encyclopedia.com. 1 Jun. 2012 <http://www.encyclopedia.com>.

"venation." The Oxford Pocket Dictionary of Current English. 2009. Encyclopedia.com. (June 1, 2012). http://www.encyclopedia.com/doc/1O999-venation.html

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venation

A Dictionary of Zoology | 1999 | | Copyright

venation The pattern formed by the arrangement of the veins on the wings of insects. The veins are identified by a system of letters and numbers which allows their precise arrangement to be described. Venation is frequently used as a taxonomic character.

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MICHAEL ALLABY. "venation." A Dictionary of Zoology. 1999. Encyclopedia.com. 1 Jun. 2012 <http://www.encyclopedia.com>.

MICHAEL ALLABY. "venation." A Dictionary of Zoology. 1999. Encyclopedia.com. (June 1, 2012). http://www.encyclopedia.com/doc/1O8-venation.html

MICHAEL ALLABY. "venation." A Dictionary of Zoology. 1999. Retrieved June 01, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O8-venation.html

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venation

A Dictionary of Plant Sciences | 1998 | | Copyright

venation The arrangement of the veins or nerves of a leaf.

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MICHAEL ALLABY. "venation." A Dictionary of Plant Sciences. 1998. Encyclopedia.com. 1 Jun. 2012 <http://www.encyclopedia.com>.

MICHAEL ALLABY. "venation." A Dictionary of Plant Sciences. 1998. Encyclopedia.com. (June 1, 2012). http://www.encyclopedia.com/doc/1O7-venation.html

MICHAEL ALLABY. "venation." A Dictionary of Plant Sciences. 1998. Retrieved June 01, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O7-venation.html

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