Pronunciation: ( ˌ )b ī - ' f ī -l ə r
Function: adjective
Etymology: International Scientific Vocabulary bi- + Latin filum thread ― more at FILE
Date: 1846
1 : involving two threads or wires < bifilar suspension of a pendulum>
2 : involving a single thread or wire doubled back upon itself <a bifilar resistor>
– bi · fi · lar · ly adverb