active transport
"Active transport" can refer to a biological process essential for cellular functions or a sustainable mode of travel.
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Definition
C1Biology
(technical, academic)The movement of molecules or ions across a cell membrane from a lower to a higher concentration, using cellular energy.
Example
- Cells use active transport to absorb nutrients from their surroundings.
- Active transport is crucial for maintaining the cell's internal environment.
B2Transportation Planning
(informal, everyday)Traveling by walking or cycling.
Example
- Cities are encouraging active transport to reduce traffic congestion.
- Active transport is a healthy and eco-friendly way to commute.
Similar
Terms that have similar or relatively close meanings to "active transport":