'a bifilar' definitions:
Definition of 'a bifilar'
From: GCIDE
- Bifilar \Bi*fi"lar\, 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. [1913 Webster]