Filaments in a lightbulb.
The definition of a filament is a slender fiber or thread.
The slim part of the stamen that supports the anther is an example of a filament.
- a very slender thread or fiber
- a threadlike part; specif.,
- the fine metal wire in a lightbulb, which becomes incandescent when heated by an electric current
- the cathode of a thermionic tube, usually in the form of a wire, which may be electrically heated
- Bot. the stalk of a stamen bearing the anther
Origin of filamentFrench from Medieval Latin filamentum from Late Latin filare, to spin from Classical Latin filum: see file
- A fine or very thin thread or fiber: filaments of cloth; filaments of flax.
- A slender or threadlike structure or part, especially:a. A fine wire that is heated electrically to produce light in an incandescent lamp.b. The stalk that bears the anther in the stamen of a flower.c. A chainlike series of cells, as in many algae.d. A long thin cellular structure characteristic of many fungi, usually having multiple nuclei and often divided by septa.e. Any of various long thin celestial objects or phenomena, such as a solar filament.
Origin of filamentNew Latin fīlāmentum from Late Latin fīlāre to spin from Latin fīlum thread ; see gwhī- in Indo-European roots.
- fil′a·men′tous fil′a·men′ta·ry
- A fine thread or wire.
- Such a wire, as can be heated until it glows, in an incandescent light bulb or a thermionic valve.
- (physics, astronomy) A massive, thread-like structure, such as those gaseous ones which extend outward from the surface of the sun, or such as those (much larger) ones which form the boundaries between large voids in the universe.
- solar filament
- galaxy filament
- the Ursa Major Filament
- (botany) The stalk of a stamen in a flower, supporting the anther.
- (textiles) A continuous object, limited in length only by its spool, and not cut to length.