1. consisting of or resembling thin threads or fibers; having a threadlike structure
2. (biology) of or relating to organisms, especially algae or fungi, that grow in long chains or strands
Usage: technical

Examples

• The filamentous roots of the plant spread deep into the soil.
• Under the microscope, the filamentous structure of the fungus became visible.
• Filamentous algae can clog water filters and harm aquatic ecosystems.
• The filamentous proteins in muscle tissue give it strength and elasticity.
• Certain bacteria form filamentous colonies that look like delicate threads.
• The filamentous nature of the material made it ideal for weaving into fabric.