Definition of armature in English:



  • 1The rotating coil or coils of a dynamo or electric motor.

    • ‘I think the main objective of the salvors here would have been the copper from the electric motors, and the remains of what looks like the armature of an electric motor lies cleaned of its windings among the debris.’
    • ‘Silicon steel stampings are used in the laminations of electric motor armatures, rotors, and generators.’
    • ‘Mention should also be made of the relay steels, used widely in relays, armatures, and solenoids.’
    • ‘He is forced to sign a ‘Permission for Search’ which allows Ford detectives to ransack his home, turn out all his poor possessions in hopes of finding a Ford incandescent lamp or a generator armature.’
    • ‘In a regular can motor, the armature spins inside the can when an electric current is applied.’
    • ‘Process and device for the connection of armature coil wires with the lamellas of a hook-collecting device’
    • ‘The company also manufactures photovoltaic cells (used in the production of solar energy) and precision metal and plastic components such as gears, switches and motor armatures.’
    • ‘With only three moving parts in the electric motor (one armature and two bearings), electric propulsion systems are designed to last for two decades or more.’
    • ‘This dual-function head was an inductive device, with a coil of wire wrapped around a toroidal armature.’
    • ‘This alloy has been specially developed for split armature coils of telephones.’
    • ‘The F series uses a proprietary neodymium-iron magnet rotor structure and skewed armature assembly to optimize machine torque and volume.’
    • ‘In the start-up phase of the Polish die casting operation TMGI will produce steering wheel armatures for one of its clients, TRW Automotive, to be used in a model range from Ford.’
    1. 1.1 Any moving part of an electrical machine in which a voltage is induced by a magnetic field.
      • ‘When this happens, the armature in the pump usually stops on a bad commutator bar.’
      • ‘The armature actuates a valve closing element which interacts with a fixed valve seat of a fuel valve and is movable away from the fixed valve seat when the magnetic coil is excited.’
      • ‘If you input electrical energy the armature turns and you have a motor; if you turn the armature physically electrical energy comes out and you have a generator.’
      • ‘Mr McVittie, a former armature winder for AIE engineering works at Trafford Park, said: ‘We have had some good times and we still have them.’’
      • ‘A barrier valve including an armature, longitudinally movable toward a pole core by excitation of an electrical winding.’
      • ‘The fuel inlet connector and the armature are adapted to permit a first flow path of gaseous fuel between the armature and the magnetic coil as part of a path leading to said fuel valve.’
    2. 1.2 A piece of iron or other object acting as a keeper for a magnet.
      • ‘Sixth, distinct increase of power by employment of the device of a so-called armature made of the same metal with which the physicists are accustomed to surround resinous and vitreous bodies.’
      • ‘A tappet that has the closing member is engaged by a magnet armature that acts on the seat valve in the closing direction and a restoring spring that acts in the opening direction.’
      • ‘The Denso unit is wound with square cross section copper wire, which puts 33-percent more copper in the armature, improving magnetic efficiency by the same percentage.’
  • 2A metal framework on which a sculpture is molded with clay or similar material.

    • ‘Once the pose is completed, the armature is stuffed or wrapped with small pieces of newspaper held in place with masking tape.’
    • ‘This preoccupation is also evident in his well-known fire sculptures comprising wire armatures bound with a wick and burnt in 10-second performances.’
    • ‘They were instructed in how to build and use an armature, which helps develop modeling skills by combining both the additive and subtractive nature of sculpture.’
    • ‘Well, in clay animation, each object is sculpted in clay or a similarly pliable material such as plasticine, usually around an armature.’
    • ‘The structure of the tree is made with a steel armature from which a series of plastic buckets hang.’
    • ‘Scattered in front of this painting like an unruly audience were chair sculptures composed of armatures wrapped with everything from plaster bandages to chenille bedspreads bound with rope to endless rounds of thin copper wire.’
    • ‘During our second class, we reviewed the images and information from the previous class and the students finished building their armatures.’
    • ‘Beginning with a steel armature she gradually moulds her semi-figurative sculptures out of plaster, which are then bronze-casted.’
    • ‘The simple structures of the wire armatures were developed into more expressive forms.’
    • ‘His apprentices usually prepare the mixture of torn-up newspaper, carpentry glue, and water, while he fashions the mask armature from galvanized chicken-wire, using a pair of pliers as his main tool.’
    • ‘Constructed from canvas and other materials stretched onto welded steel armatures, the sculptures are bulbous and faceted, like an insect's eye or a landscape seen from a plane.’
    • ‘In plaster, as in clay modelling, an armature or skeleton framework is necessary for a free-standing figure.’
    • ‘Once the armature was completed, the next step was to add the papier-mache.’
    • ‘The video featured ideas on how to set up a clay-building studio on a budget, and gave examples on how to best use coils, slabs and simple armatures.’
    • ‘We do build twisted aluminium wire armatures (skeleton-like structures that the model can be built around) which are used for models with simple or limited movement.’
    • ‘Demonstrate proper use of wire cutters and caution students to be careful when manipulating the wire into armatures.’
    • ‘Construction of the piece, whose stainless-steel armature holds 25 tons of soil and includes an irrigation system, began in mid-May and took three weeks to complete.’
    • ‘Next, I create an armature using anything I can find, or make, that is close to the shape I intend to end up with.’
    • ‘The sculpture uses no armature or supports, making gravity a crucial element of the piece.’
    • ‘Once the armatures were complete, we used papier-mache to cover and more permanently attach all the architectural forms to the dome.’
    1. 2.1 A framework or formal structure, especially of a literary work.
      ‘Shakespeare's plots have served as the armature for many novels’
      • ‘The former has no theoretical armature.’
      • ‘She used Thomas Hardy's poem, "The Darkling Thrush" as the armature for her meditations on memory and loss.’
      • ‘An example is Odysseus's journey that forms the narrative armature of the Odyssey.’
      • ‘The concentrated impact of the media is acted out, revealed and reconfigured within Cabaret Voltaire's critical armatures.’
      • ‘Nothing is self-consciously fractured or haphazard; the songs hang shaggily on rigid compositional armature.’
      • ‘He has, nonetheless, the full armature of liberal-left prejudices which have become commonplace in arts faculties these days.’
      • ‘Actually, the composer Stefan Weisman was so taken by the acrostic form that he actually used the armature to compose the music for the opera.’
      • ‘Finally, Shakespeare's plots have served as the armature for many novels.’
      • ‘Dakotans like to believe that their long winters encourage reflection and reading, and the open view across the prairie inspires a broad-minded intellectual armature.’
      • ‘The Modernist obsession with control is superseded by a more responsive, flexible armature for different sorts of activities.’
      • ‘In many cases they are almost impossible to read, suggesting that, for him, poetry itself can "last by being lost" or at least hidden within an abstract armature.’
      • ‘Jameson's own story is buttressed by a very powerful theoretical armature - if not guided by a Concept, then underpinned by concepts galore.’
      • ‘Weinberg made four orchestral suites out of numbers from the ballet music, without the idea of keeping the armature of the plot.’
      • ‘Her coded critique of Ricardian economics, with its adherence to Say's Law and obsession with saving, I will argue, forms the philosophical armature of The Mill on the Floss.’
  • 3Biology
    The protective covering of an animal or plant.

    • ‘Mantel's test did not reveal any correlation between armature, genetic distance and the overall quantitative morphological similarity.’
    • ‘There is no evidence for armature on the walking legs, however only a few legs are near complete and the lack of spines may be taphonomic.’
    1. 3.1archaic Armor.


Late Middle English: from French, from Latin armatura ‘armor’, from armare ‘to arm’ (see arm). The original sense was ‘armor’, hence ‘protective covering’ ( armature (sense 3), early 18th century), later ‘keeper of a magnet’, source of armature (sense 1) (mid 19th century).