Latin = a thread. Filum terminale - a thread of pia continuous with the lower end of the spinal cord.

literally mean a "thread". This name is given to several thread-like structures such as the filum terminale, the lower extension of the pia mater of the spinal cord.

This is a thin piece of tissue that comes from the end of the spinal cord and goes to the tail bone. Sometimes there is too much fat in the filum,or the filum is too tight. Both of these things can cause a tethered cord.

a threadlike anatomical structure or chainlike series of cells