Bible Encyclopedias
Pyramidion

1911 Encyclopedia Britannica

(diminutive of "pyramid"), an architectural term for the copper-gilt casing covering the apex of an obelisk, and generally extended to its upper termination of pyramidical form.

Bibliography Information
Chisholm, Hugh, General Editor. Entry for 'Pyramidion'. 1911 Encyclopedia Britanica. https://www.studylight.org/​encyclopedias/​eng/​bri/​p/pyramidion.html. 1910.