IPA: /ˈbɪfaɪlər/
KK: /ˈbɪfaɪlər/
Describing something that uses or is fitted with two threads or wires.
The bifilar winding in the motor improves its efficiency.
Bifilar → It is formed from "bi-" (meaning two) and "filum" (meaning thread or wire). The word describes something that involves two threads or wires.
Think of 'two' ('bi-') threads or wires ('filum') working together — that's what bifilar means.