At some point in time those two lines that were running parallel merged.

It was only a handful of steps, and the line merged into a door.

And after that the line merged into itself, and he could make out nothing but the back of the man ahead of him.

The invisible lines, which traced the patterns of their existence, merged into one.

Dancers are lost or added as lines merge and emerge.

The lines on the display merged again, and a final bright dot appeared.

The sleek lines of its dome merged into the even surface.

Fourth and an inch: shouldn't the lines merge into a single green one?

The station is just south of the point where the double line merges into one.

The two pale lines merge into a single median line on the prothorax.