1. A threadlike anatomical structure; a thin cord or fiber in the body.
Usage: anatomy; technical
2. In botany, a stalk or stem, especially the stalk of a stamen.
Usage: botany; technical

Examples

• The filum terminale is a delicate thread of tissue extending from the spinal cord.
• Under the microscope, the filum appeared as a thin, translucent structure.
• In flowering plants, the filum supports the anther at the tip of the stamen.
• The surgeon carefully identified the filum during the procedure.
• Botanists examined the filum to understand the flower's reproductive anatomy.