Definitions
from The Century Dictionary.
- noun In annelids, one of the embryonic structures from which nephridia are developed. They consist of small cellular aggregations attached to the septa, one pair in each segment, except in front.
Etymologies
Sorry, no etymologies found.
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Examples
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A genital chamber (ventral section of the gonocoel), x pronephridium, B its coelom-aperture, C atrium, D body-cavity, E visceral cavity, F subintestinal vein, G aorta (the left branch connected by a branchial vessel with the subintestinal vein), H renal vessel.
The Evolution of Man — Volume 2 Ernst Heinrich Philipp August Haeckel 1876
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