エンドソームMeanings1nounendosomebiologyA membrane-bound compartment inside eukaryotic cells, involved in endocytosis and intracellular transport.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と輸ゆ送そうに関かん与よする。Endosomes are involved in sorting and transporting materials within the cell.