noun
- A thin, thread-like projection extending from the surface of a cell, especially during cell migration or growth; a type of cellular protrusion.
Usage: biology; cell biology; plural: filopodia
Examples
- The filopodium helps the cell explore its environment and sense chemical signals.
- During development, filopodia extend from growth cones to guide axon pathways.
- Under the microscope, the filopodia appeared as delicate, hair-like structures.
- Cells use filopodia to probe and adhere to neighboring cells.
- The filopodium is composed primarily of actin filaments.