membrane
This word evokes a sense of delicate but critical separation. It describes a boundary that is not a solid wall, but rather a selective filter that allows specific substances to pass through while blocking others. It carries a clinical or biological feeling, suggesting a fragile, translucent quality. In technical contexts, it refers to the physical tension and elasticity of a surface. This creates a mental image of a drum skin or a biological veil, emphasizing the balance between being a protective shield and a permeable gateway.
Used when referring to a specific biological structure or a manufactured filter, such as a semi-permeable membrane in a lab.
Meanings
A thin pliable sheet of material that acts as a barrier or filter.
"The cell membrane regulates what enters and exits the cell."
Examples
The cell membrane regulates what enters and exits the cell.
Collocations & Compounds
cell membrane
Noun collocation: the semipermeable boundary of a cell
The cell membrane regulates what enters and exits the cell.
mucous membrane
Noun collocation: a moist lining of certain internal organs
The nasal cavity is lined with a mucous membrane to trap particles.
semipermeable membrane
Noun collocation: a barrier that allows only certain molecules to pass through
Osmosis occurs when water moves across a semipermeable membrane.
protective membrane
Noun collocation: a layer that shields an internal structure
The organ is encased in a protective membrane to prevent infection.
rupture the membrane
Verb collocation: to break or tear a thin layer
The pressure caused the delicate membrane to rupture.
Etymology
Derived from the Latin "membrana," meaning a skin or parchment, which originates from "membrum" meaning a limb or member of the body.