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1911 Encyclopedia Britannica
a construction in stone or brickwork designed to receive and resist the lateral pressure of an arch, vault or strut. When built outside a wall it is termed a buttress.
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Chisholm, Hugh, General Editor. Entry for 'Abutment'. 1911 Encyclopedia Britanica. https://www.studylight.org/encyclopedias/eng/bri/a/abutment.html. 1910.