精せい嚢のうせいのうMeanings1nounseminal vesicleanatomyAnatomical term referring to the paired glands that secrete fluid into the ejaculatory ducts.精せい嚢のうは精せい液えきの一いち部ぶを分ぶん泌ぴつする器き官かんです。The seminal vesicles are organs that secrete part of the seminal fluid.