bifilar

• POS: Adjective
• HYPHEN: bi=fi=lar

CIDE DICTIONARY

bifilar, a. [Pref. bi- + filar.].

 Two-threaded; involving the use of two threads; as, bifilar suspension; a bifilar balance.  [1913 Webster]

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.