初しょ期きエンドソームMeanings1nounearly endosomeA cell-biology term for the sorting compartment formed shortly after endocytosis. Used in technical and academic contexts.初しょ期きエンドソームは、細さい胞ぼう内ないで物ぶっ質しつの選せん別べつを行おこなう区く画かくです。The early endosome is a compartment that sorts materials inside the cell.