pro·to·plasm 
(prōtə-plăz′əm)
(prōtə-plăz′əm)n.
The complex, semifluid, translucent substance that constitutes the interior matter of a living cell and is composed of proteins, fats, and other molecules suspended in water. It includes the cytoplasm, the nucleus in eukaryotes, and organelles such as mitochondria.
pro′to·plasmic (-plăzmĭk), pro′to·plasmal (-plăzməl), pro′to·plas·matic (-plăz-mătĭk) adj.