1. a very slender natural or synthetic fiber

Similar word(s): fibril, strand

Definition categories: substance, fiber, fibre

2. the stalk of a stamen

Definition categories: plant, stalk, stem

3. a threadlike structure (as a chainlike series of cells)

Similar word(s): filum

Definition categories: body, structure

4. a thin wire (usually tungsten) that is heated white hot by the passage of an electric current

Definition categories: man–made, wire

Sentences with filament as a noun:

- solar filament

- galaxy filament

- the Ursa Major Filament