Literally meaning: “body of eater”
Origin: Anc Greek
φάγος/phagos(=eater) > έφαγον/ephagon(=indefinite tense of verb "εσθίω"/esthio(eat, devour)
++σώμα/soma(body) > σύμα/sima(=corpse). Homer(9th cen) reffered to word "σώμα" with the meaning of the corpse.
Phagosome is a vesicle formed during process of phagocytosis.