venation


Also found in: Thesaurus, Medical, Encyclopedia, Wikipedia.

ve·na·tion

 (vē-nā′shən, vĕ-)
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.

ve·na′tion·al adj.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

venation

(viːˈneɪʃən)
n
1. (Biology) the arrangement of the veins in a leaf or in the wing of an insect
2. (Biology) such veins collectively
Also called: nervation, nervature, nervuration or neuration
veˈnational adj
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014

ve•na•tion

(viˈneɪ ʃən, və-)

n.
1. the arrangement of veins, as in a leaf or in the wing of an insect.
2. these veins collectively.
[1640–50; < Latin vēn(a) vein + -ation]
ve•na′tion•al, adj.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.

ve·na·tion

(vē-nā′shən)
1. The distribution or arrangement of a system of veins, as in a leaf blade.
2. The veins of such a system considered as a group.
The American Heritage® Student Science Dictionary, Second Edition. Copyright © 2014 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

venation

Archaic. the sport or occupation of hunting. — venatic, venatical, venational, adj.
See also: Hunting
-Ologies & -Isms. Copyright 2008 The Gale Group, Inc. All rights reserved.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.venation - (botany) the arrangement of veins in a leafvenation - (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 animalvenation - (zoology) the system of venous blood vessels in an animal
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
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
References in periodicals archive ?
Diagnostic Key to Higher Taxa of New World Tropiduchidae 1.-- Wings shallowly tectiform, usually with Tropiduchinae distinct nodal line (forewings often slightly inflected at nodal line) with venation distinctly reticulate distally; ovipositor flattened laterally, elongated (styletized), gonoplacs usually with distinct marginal teeth; gonapophyses IX in shape of isosceles triangle 1'-- Wings more steeply tectiform, nodal line Elicinae 2 not distinct, forewing venation either not reticulate or entire forewing reticulate; ovipositor rounded, gonoplacs without marginal teeth or with denticles; gonapophyses IX elongate, but not triangular 2.-- Wings steeply tectiform, almost parallel Bucini trib nov.
These characters range from leaf architectural features such as overall size and shape and the nature of venation and tooth types to cuticular features that can be analysed using light and scanning electron microscopy, such as the nature of stomatal form and distribution, trichomes, glands and inner and outer surface ornamentation.
However several authors recognized the wing venation of these insects as plesiotypic, compared to that of other ensiferans (Karny 1929b), and assumed a primary lack of the Grylloptera stridulatory apparatus (Zeuner 1939).
Venation and setulae: Pterostigma about 2.5x as long as wide; longitudinal veins mostly straight; vein R23 slightly sinuous; veins [R.sub.4+5] and M generally parallel, their distal sections slightly curved posteriorly; crossvein proportion 1.5-2.4; posterodistal lobe of cell bcu short, but conspicuous.
Membrane dark grey, venation dark, indistinct on the specimen examined.
In contrast, others, mainly relying on a particular anatomical feature (structure of the thorax by Gurjeva, 1974; wing venation by Dolin, 1975), retain the classification first proposed by Hyslop (1917) in which the group is regarded as a tribe of the subfamily Elaterinae (Hayek, 1990).
pulegium with less deep venation and lacunous parenchyma surrounding vascular tissues.
Venation patterns, soral characteristics and shape of the fronds of the microsorioid Polypodiaceae.
In this paper I describe and illustrate one species of Mesepipsocus, the first known in Bolivia, peculiar in being brachypterous and in having caeciliusid forewing venation; it is assigned in Mesepipsocus by having V2+3 strongly heeled anteriorly, and by lacking V1.
In the taxonomic field, the Lepidoptera, especially the suborder Rhopalocera has been recently receiving plentiful contributions centered around the description of new species and varieties; the creation of new genera from others that had acted as an "omnibus" containing numerous species, morphologically similar in their mature state, but different in taxonomic characters related to their immature states (MUYSHONDT, 2005): the anatomy of the adults' alar venation; or the structure of the genital armor present in both sexes.