Definition of mural arch
: the wall or arch in the plane of the meridian formerly used for the attachment of an astronomical circle
Start your free trial today and get unlimited access to America's largest dictionary, with:
- More than 250,000 words that aren't in our free dictionary
- Expanded definitions, etymologies, and usage notes
- Advanced search features
- Ad free!
Seen and Heard
What made you want to look up mural arch? Please tell us where you read or heard it (including the quote, if possible).