noun |
1. |
coil - a round shape formed by a series of concentric circles (as formed by leaves or flower petals) |
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whorl,
roll,
curl,
curlicue,
ringlet,
gyre,
scroll |
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round shape a shape that is curved and without sharp angles
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corolla (botany) the whorl of petals of a flower that collectively form an inner floral envelope or layer of the perianth; "we cultivate the flower for its corolla"
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calyx (botany) the whorl of sepals of a flower collectively forming the outer floral envelope or layer of the perianth enclosing and supporting the developing bud; usually green
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verticil a whorl of leaves growing around a stem
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2. |
coil - reactor consisting of a spiral of insulated wire that introduces inductance into a circuit |
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reactor an electrical device used to introduce reactance into a circuit
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armature coil in which voltage is induced by motion through a magnetic field
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astatic coils an arrangement of coils used in sensitive electrical instruments; the coils are arranged to give zero resultant external magnetic field when a current passes through them and to have zero electromotive force induced in them by an external magnetic field
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choke coil,
choking coil,
choke a valve that controls the flow of air into the carburetor of a gasoline engine
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field coil,
field winding the electric coil around a field magnet that produces the magneto motive force to set up the flux in an electric machine
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induction coil a coil for producing a high voltage from a low-voltage source
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primary coil,
primary winding,
primary coil forming the part of an electrical circuit such that changing current in it induces a current in a neighboring circuit; "current through the primary coil induces current in the secondary coil"
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read/write head,
head (computer science) a tiny electromagnetic coil and metal pole used to write and read magnetic patterns on a disk
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secondary coil,
secondary winding,
secondary coil such that current is induced in it by passing a current through the primary coil
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solenoid a coil of wire around an iron core; becomes a magnet when current passes through the coil
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tickler coil a small coil in series with the anode of a vacuum tube and coupled to the grid to provide feedback
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3. |
coil - a structure consisting of something wound in a continuous series of loops; "a coil of rope" |
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spiral,
volute,
whorl,
helix |
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structure,
construction a thing constructed; a complex entity constructed of many parts; "the structure consisted of a series of arches"; "she wore her hair in an amazing construction of whirls and ribbons"
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hank a coil of rope or wool or yarn
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4. |
coil - tubing that is wound in a spiral |
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tubing,
tube conduit consisting of a long hollow object (usually cylindrical) used to hold and conduct objects or liquids or gases
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condenser lens used to concentrate light on an object
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5. |
coil - a contraceptive device placed inside a woman's womb |
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birth control device,
contraceptive,
contraceptive device,
prophylactic device,
preventative,
preventive an agent or device intended to prevent conception
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6. |
coil - a transformer that supplies high voltage to spark plugs in a gasoline engine |
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transformer an electrical device by which alternating current of one voltage is changed to another voltage
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verb |
1. |
coil - wind around something in coils or loops |
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loop,
curl |
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uncoil unwind or untwist
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twine,
wrap,
wind,
roll make by twisting together or intertwining; "twine a rope"
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