Bifilar
Pronunciation : Bi*fi"lar
Part of Speech : a.
Etymology : [Pref. bi- + filar.]
Definition : Defn: Two-threaded; involving the use of two threads; as, bifilar suspension; a bifilar balance. Bifilar micrometer (often called a bifilar), an instrument form measuring minute distances or angles by means of two very minute threads (usually spider lines), one of which, at least, is movable; -- more commonly called a filar micrometer.
Source : Webster's Unabridged Dictionary, 1913