surbased

adjective sur·based \ -st \

Definition of surbased

1 : having the curve center below the springing line of imposts

surbased arch

surbased vault

2 : having a surbase

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Origin and Etymology of surbased

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