from The American Heritage® Dictionary of the English Language, 5th Edition.

  • adjective Having or using only one filament, such as a thread or wire.

from The Century Dictionary.

  • Having only one thread: specifically applied to a magnetometer consisting of a magnetic bar suspended by a single thread. See magnetometer.
  • noun A unifilar magnetometer.

from the GNU version of the Collaborative International Dictionary of English.

  • adjective Having only one thread; involving the use of only one thread, wire, fiber, or the like.
  • adjective (Physics) an instrument which consists of a magnetic bar suspended at its center of gravity by a long thread, constituting a delicate means for accurately measuring magnetic intensities, also for determining declinations of the magnetic needle.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • adjective Having or using only one thread.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • adjective having or using only one filament


from Wiktionary, Creative Commons Attribution/Share-Alike License



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  • The angle included between the general directions of these two lines is nearly a right angle. '”' The Kew unifilar magnetometer, adapted to the determination of the horizontal part of terrestrial magnetic force in absolute measure, was mounted in the summer of 1861; and till 1862 February, occasional observations (14 in all) were taken simultaneously with the old and with the new instrument.

    Autobiography Airy, George Biddell, Sir 1896


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