Medical Dictionary
stratum spinosum
noun stratum spi·no·sum \-spi-ˈnō-səm\
plural strata spi·no·sa \-sə\
Medical Definition of STRATUM SPINOSUM
: the layers of prickle cells over the layer of the stratum basale capable of undergoing mitosis—called also prickle cell layer; see malpighian layer
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