What term describes the direction of the twist in the wires of a strand?

The term that describes the direction of the twist in the wires of a strand is "Lay." In the context of cable and wire, "lay" specifically refers to the way individual wires are twisted together to form a strand. This concept is important in understanding the mechanical properties of the cable, as different lay directions can affect flexibility, strength, and overall performance of the wire assembly.

"Pitch" is typically used to describe the distance between twists in helical structures but does not specify the direction. "Rotation" generally refers to the act of turning or spinning but does not capture the specific structural characteristic of the twist. "Coiling" refers to winding in a circular motion and is not specifically related to the twist direction in the way that "lay" is. Therefore, "lay" is the most accurate term to describe the direction of the twist in wires of a strand.