immunocytochemistryPronunciation: /ˌɪmjʊnəʊˌsʌɪtəʊˈkɛmɪstri, ɪˌmjuːnəʊ-/Definition of immunocytochemistry noun [mass noun] the range of microscopical techniques used in the study of the immune system. Derivatives immunocytochemical adjective immunocytochemistry in other Oxford dictionaries Definition of immunocytochemistry in the US English dictionary