surbased

adjective

sur·​based

-st

1

: having the curve center below the springing line of imposts

surbased arch

surbased vault

2

: having a surbase

Word History

Etymology

French surbaissé depressed, flattened, surbased (from past participle of surbaisser to lower from above, depress, flatten, from sur- + baisser to lower, from bas low, from Middle French) + English -ed

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