title: Filament
text: # Filament
  
  The word filament, which is descended from Latin filum meaning "thread", is used in English for a variety of thread-like structures, including:
  
  ## Astronomy
  
  * Galaxy filament, the largest known cosmic structures in the universe
  * Solar filament, a solar prominence seen against the disc of the sun
  
  ## Biology
  
  * Myofilament, filaments of myofibrils constructed from proteins
  * Protein filament, a long chain of protein subunits, such as those found in hair or muscle
  * Part of a stamen, the male part of a flower
  * Hypha, a thread-like cell in fungi and Actinobacteria
  * Filamentation, an elongation of individual bacterial cells
  
  ## Textiles
  
  * Fiber, natural or manmade substances significantly longer than they are wide
  * Yarn (more loosely)
  * Filament fiber, fiber that comes in a continuous long length
  
  ## Media
  
  * Filament (magazine), a female-oriented erotica magazine
  * 2002 movie by Jinsei Tsuji
  * Filament (band), a musical group from Japan
  * Filament Games, a Wisconsin-based educational video game developer
  * Filament Productions, a production design and touring video company
  
  ## Physics and engineering
  
  * Electrical filament, The thin wire in an electrical bulb that produces enough heat to give out light.
  * Heater filament, a thin heating element in a vacuum tube
  * Current filament, a current restricted to a small part of the conducting medium
  * Filament propagation, diffractionless propagation of a light beam
  * 3D printing filament, used as raw material in 3D printing
  