Don’t forget to ask a question on the Ask OMS section of the website!  As a reminder, the purpose of Ask OMS is for you to post your questions related to architecture, and then we’ll provide the answers.  Since, we commonly get asked questions about architectural terminology, we’re continuing to provide you with a new definitions.

This week’s word is Keystone.

Keystone: The central stone of an arch or rib vault; sometimes carved.

Definition source:  The Penguin Dictionary of Architecture by John Fleming; Hugh Honour and Nikolaus Pevsner; Penguin Books Ltd. 3rd Edition, 1983.

Arch voussoirs

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