rubricyte
noun
ru·bri·cyte
| \ ˈrü-bri-ˌsīt
\
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Medical Definition of rubricyte
: an immature red blood cell that has a nucleus, is about half the size of developing red blood cells in preceding stages, and has cytoplasm that stains erratically blue, purplish, and gray due to the presence of hemoglobin : a polychromatic normoblast