Outer membrane can refer to:
- Bacterial outer membrane
- Outer mitochondrial membrane
- The outer membrane of the chloroplast
Famous quotes containing the word outer:
“The outer world, from which we cower into our houses, seemed after all a gentle habitable place; and night after night a man’s bed, it seemed, was laid and waiting for him in the fields, where God keeps an open house.”
—Robert Louis Stevenson (1850–1894)