Homophones
noun
Freq #330455
Meanings
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1
noun
anatomy and biology: a slender thread-like structure or filament
The filum terminale extends downward from the end of the spinal cord.
Thesaurus
Etymology
A learned borrowing from Latin filum ("thread"). Anatomists and biologists use it in names for slender structures, most familiarly the filum terminale at the lower end of the spinal cord.