From these were derived the abaci of the Chinese and Russians.
The little birds under the angles of the abaci should not be overlooked.
Each window has three very slender white marble shafts, with capitals and with abaci moulded on each side.
The capitals here are very close imitations of Classical work, with the abaci frequently concave on plan.
The architrave rests upon them, and, as in Greece and Egypt, its immediate weight is borne by abaci.
The columns stand less than their diameter apart, and the abaci are so broad that they nearly touch.
The door and window have respectively six and three jamb-shafts, and the abaci throughout are square in plan.
But the abaci of its capitals run from the jambs across to the buttresses, as is the case with those of the doorway.
The abaci are all square in plan, and both bases and caps are set at right angles to the direction of the arches they support.
These abaci, which are finely moulded, are not more than about two and a half inches in depth.
late 14c., "sand table for drawing, calculating, etc.," from Latin abacus, from Greek abax (genitive abakos) "counting table," from Hebrew abaq "dust," from root a-b-q "to fly off." Originally a drawing board covered with dust or sand that could be written on to do mathematical equations. Specific reference to a counting frame is 17c. or later.