a. [ Pref. bi- + filar. ] Two-threaded; involving the use of two threads;
Bifilar micrometer (often called
a bifilar
n. [ Cf. F. siflet. ] (Zool.) The six-shafted bird of paradise. See
a. [ Uni- + L. filum a thread. ] Having only one thread; involving the use of only one thread, wire, fiber, or the like;
Unifilar magnetometer (Physics),