Merkel cell
noun
Mer·kel cell
variants:
also Merkel's cell \ ˈmər-kəl(z)- 
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Medical Definition of Merkel cell
: a cell that occurs in the basal part of the epidermis, is characterized by dense granules in its cytoplasm, is closely associated with the unmyelinated tip of a nerve fiber, and probably functions in tactile sensory perception