Cytoplasm

The part of the cell not including the nucleus.

The contents of a cell other than the nucleus; cytoplasm consists of a fluid containing numerous structures, known as organelles, that carry out essential cell functions.

(SY-toh-PLA-zum) The fluid inside a cell but outside the cell's nucleus. Most chemical reactions in a cell take place in the cytoplasm.

The living material of the cell, exclusive of the nucleus, consisting of a complex protein matrix or gel, and where essential membranes and cellular organelles (mitochondria, plastids, etc.) reside.