Meaning & Definition of word "Membrane"

Membrane

/ˈmɛm.brɪn/

1. A membrane is a thin layer of tissue that covers a surface, lines a cavity, or divides a space or organ.
- Example: The cell membrane regulates the flow of substances in and out of the cell.
2. In biology, a membrane can refer to a biological barrier, often composed of lipid layers.
- Example: The nuclear membrane surrounds the nucleus and protects its contents.
3. In engineering, a membrane refers to a flexible barrier that can separate substances, often used in filtration.
- Example: The reverse osmosis membrane was effective in purifying the water.
4. In music, a membrane can refer to a thin material that vibrates to produce sound, such as in drums.
- Example: The drummer carefully tuned the membrane of the snare drum for the perfect sound.

From Latin 'membrana', meaning 'skin' or 'membrane'.

cell membrane:

The structure that encloses the cytoplasm of a cell.

semi-permeable membrane:

A membrane that selectively allows certain molecules to pass through.

basement membrane:

A thin, fibrous, extracellular matrix that separates epithelial cells from underlying tissue.

plasma membrane:

The cell membrane that surrounds and protects the interior of the cell.

biological membrane:

Any membrane that is biologically active and exists within living organisms.

Meaning: A term used in science fiction or informal language to describe a boundary or barrier.

Example Sentence: It felt like we were trapped behind a membrane, isolated from the world.