Dosseret
DOSSERET, or impost block (a Fr. term, from dos, back), in architecture, the cubical block of stone above the capitals in a Byzantine church, used to carry the arches and vault, the springing of which had a superficial area greatly in excess of the column which carried them.
Note - this article incorporates content from Encyclopaedia Britannica, Eleventh Edition, (1910-1911)
