cd8 cd4 t cell • cd8 cell · · · Info · Definitions · Synonyms · Characters · · cd8 · · Text Common · · Latin · · Scripts 3 · · Length 1 · · Syllables Definitions · · · (noun) a membrane glycoprotein that is found primarily on the surface of cytotoxic T cells. Synonyms: cluster of differentiation 8, CD8. · · Noun Definition 1 Synonyms · · · cluster of differentiation 8 · · Synonym 1 Characters · · 8 digit eight U+0038 c latin small letter c U+0063 d latin small letter d U+0064