The phrase 'wavy line' is correct and usable in written English.
It is typically used to refer to a curved line or an interruptive line in a graph or chart. For example, "The wavy line in the graph indicates a rise and fall in temperature over time."
(The filter's wavy line gives the dripper its name).
The result would be a single-dimensional world shaped like a wavy line.
I liked that I could view my breath on screen as a wavy line.
We were each given a large sheet of paper with a wavy line across it for a river.
So we have, in the diagram, a return to normal ratiocination, or Crowther's Disease, represented by the wavy line.
For values in between the sine and cosine vary in a smooth curve, so that a plot of sin x against x is your basic wavy line.
But "Furious Love," a joint biography that concentrates on what tabloids called "the marriage of the century," offers a long, wavy line rather than the familiar arc.
"The Middle Bakken doesn't follow a truly flat line, because there are up-dips and down-dips — a wavy line," Neset said.
The female mite burrows beneath the superficial layer of the skin to lay its eggs in a tunnel that can be seen as a dark wavy line.
The tunnelling electron changes the orientation of the Cu electron spin (dashed orange arrows) by an exchange interaction (orange wavy line), and angular momentum is subsequently transferred from the Cu electron to the Cu nucleus (dashed grey arrows) by the flip-flop hyperfine interaction (grey wavy line).
A sensitivity of 21% and 33%, in resistance change for every 1% strain, was calculated for the printed strain sensors with the straight and wavy line configurations, respectively.
