from The Century Dictionary.

  • noun A segmental portion of the mesoblast, which, in the vertebrate, gives rise to the embryonic kidneys, that is, the pronephros and mesonephros.


Sorry, no etymologies found.


  • (or subintestinal) vein, mt myotome, mm muscular mass of the provertebra, mp middle plate, ug prorenal duct, lh body-cavity, e ectoderm of the rudimentary extremities, mz mesenchymic cells, z point where the myotome and nephrotome separate.

    The Evolution of Man — Volume 1


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