cytoplasm [cytoplasms](contents of a cell excluding the nucleus) noun [UK: ˈsaɪ.təʊ.plæ.zəm] [US: ˈsaɪto.ʊ.plæ.zəm]The cytoplasm consists of proteins, the nucleus of nucleic acids. = El citoplasma está constituido de proteínas, el núcleo de ácidos nucléicos.