Unifilar /(?)/

U·ni·fi·lar

Unifilar

a.
  1. Having only one thread; involving the use of only one thread, wire, fiber, or the like; as, unifilar suspension.

Phrases & Compounds
Unifilar magnetometer
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.