Hypertext Webster Gateway: "Bifilar"
From Webster's Revised Unabridged Dictionary (1913) (web1913)
Bifilar \Bi*fi"lar\, a. [Pref. bi- + filar.]
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}.
From WordNet (r) 1.7 (wn)
bifilar
adj : having or using two filaments; "a bifilar suspension of a
waving part of an instrument"
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