stratum spinosum

noun
stratum spi·​no·​sum | \ -spi-ˈnō-səm How to pronounce stratum spinosum (audio) \
plural strata spinosa\ -​sə How to pronounce strata spinosa (audio) \

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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