Medical Dictionary
stratum spongiosum
noun stratum spon·gi·o·sum \-ˌspən-jē-ˈō-səm\
plural strata spon·gi·o·sa \-sə\
Medical 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
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