stratum spongiosum

stratum spon·gi·o·sum

noun \-ˌspən-jē-ˈō-səm\

plural strata spon·gi·o·sa \-sə\

Definition of STRATUM SPONGIOSUM

: the middle layer of the endometrium between the stratum basale and stratum compactum that contains dilated and tortuous portions of the uterine glands