Noun: plasma membrane 'plaz-mu'mem,breyn
- A thin membrane (a double layer of lipids) enclosing the cytoplasm of a cell; proteins in the membrane control passage of ions (like sodium, potassium or calcium) in and out of the cell
"all cells have a plasma membrane";
- cell membrane, cytomembrane
Derived forms: plasma membranes
Type of: semipermeable membrane
Part of: cell
Encyclopedia: Plasma membrane