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excurrent

   Also found in: Encyclopedia 0.01 sec.
ex·cur·rent  (k-skûrnt, -skr-)
adj.
1.
a. Running or flowing in an outward direction.
b. Marked by an outward flow of current.
2. Botany
a. Having a single, undivided trunk with lateral branches, as in spruce trees.
b. Extending beyond the apex of a leaf, as a midrib or vein.

[Latin excurrns, excurrent-, present participle of excurrere, to run out; see excursion.]
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excurrent
red spruce tree

excurrent [ɛkˈskʌrənt]
adj
1. (Life Sciences & Allied Applications / Zoology) Zoology having an outward flow, as certain pores in sponges, ducts, etc.
2. (Life Sciences & Allied Applications / Botany) Botany
a.  (of veins) extending beyond the margin of the leaf
b.  having an undivided main stem or trunk, as the spruce and other conifers
3. flowing or running in an outward direction
[from Latin excurrere to run forth; see excursion]


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The costal areoles include one secondary areole that extends laterally from secondary vein to secondary vein, with two included excurrent veinlets meeting at apices.
Giant clams spawn through an opening known as the excurrent siphon which looks like a miniature volcano on the underside of the clam.
Parameters used to approximate pumping rate have included valve gape, pallial cavity pressure, excurrent flow velocity, and clearance rates (Table 1).
 
 
 
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