Coil

Coil or COIL may refer to:

Geometry

 * Helix, a space curve that winds around a line
 * Spiral, a curve that winds around a central point

Science and technology

 * Coil (chemistry), a tube used to cool and condense steam from a distillation
 * Coil spring, used to store energy, absorb shock, or maintain a force between two surfaces
 * Inductor or coil, a passive two-terminal electrical component
 * Electromagnetic coil, formed when a conductor is wound around a core or form to create an inductor or electromagnet
 * Induction coil, a type of electrical transformer used to produce high-voltage pulses from a low-voltage direct current supply
 * Ignition coil, used in internal combustion engines to create a pulse of high voltage for a spark plug
 * Intrauterine device or coil, a contraceptive device
 * Chemical oxygen iodine laser, a near–infrared chemical laser
 * Coil, a binary digit or bit in some communication protocols such as Modbus
 * COIL, the gene that encodes the protein coilin
 * Coiled tubing, a long metal pipe which is supplied spooled on a large reel

Music

 * Coil (band), an English experimental band
 * Coil (album), a 1997 album by Toad the Wet Sprocket
 * "Coil", a song by Opeth from Watershed

Fictional entities

 * The Coil, a fictional organization in the G.I. Joe universe
 * Magnemite or Coil, a Pokémon character
 * Coil, a crime lord from the web serial Worm

People with the surname

 * Liam Mac Cóil, Irish novelist

Other uses

 * Coil (hieroglyph), an Egyptian hieratic hieroglyph
 * Coiled basketry, using grasses, rushes and pine needles
 * Coiling (pottery), a method of creating pottery
 * Coil (video game), a video game by Edmund McMillen and Florian Himsl
 * Turmoil or burden, as in mortal coil
 * Coiling, a method for storing rope or cable