furnished or fitted with two filaments or threads.
Encyclopaedia Britannica, 11th Edition, Volume 9, Slice 2 Various
having two parallel threads, as in the suspension of certain measuring instruments
of or relating to a resistor in which the wire is wound in a loop around a coil, the two leads being parallel, to reduce the inductance
having two flagella. Historical Examples Encyclopaedia Britannica, 11th Edition, Volume 10, Slice 4 Various adjective (biology) having two flagella: biflagellate protozoans
an acid salt of hydrofluoric acid containing the group HF 2 -, as ammonium bifluoride, NH 4 HF 2.
Chiefly Optics. having two foci. (of an eyeglass or contact lens) having two portions, one for near and one for far vision. bifocals, bifocal eyeglasses or contact lenses. Historical Examples Encyclopaedia Britannica, 11th Edition, Volume 11, Slice 1 “Franciscans” to “French Language” Various Parallel Paths Thomas William Rolleston adjective (optics) having two different focuses relating […]
capable of being folded into two parts, as with leaves that are hinged together: a bifold door; bifold shutters. Historical Examples Hints on cheese-making Thomas Day Curtis