I'm trying to find a better version of this image for glass etching and I have no idea what it is called to search for it online. What do I search for in Google Images to find a better version this image?
arabesque would be another good descriptor for that kind of imagery
You can search to find many examples of SCROLLWORK (and scroll shapes) that when "mirrored" (duplicated and arranged to touch) to build the symmetrical shapes you want. They can be used in combinations to be as intricate as you wish.
The following keywords resemble that style:
- Line Art