seminal vesicle n either of a pair of glandular pouches that lie one on either side of the male reproductive tract and that in human males secrete a sugar- and protein-containing fluid into the ejaculatory duct
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either of a pair of male accessory sex glands that open into the vas deferens before it joins the urethra. The seminal vesicles secrete most of the liquid component of semen.
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glandula vesiculosa.Medical dictionary. 2011.