- a device for making arithmetic calculations, consisting of a frame set with rods on which balls or beads are moved.
- Architecture. a slab forming the top of the capital of a column.
Origin of abacus
Examples from the Web for abacus
Thus, Goldman found them a willing buyer for the junk piled into Abacus.
But Abacus and similar deals were already sucking money out of Rhineland, according to a person familiar with the matter.
Abacus, a square tablet which crowns the capital of the column.Architecture
Thomas Roger Smith
This, as pictured in the text, is the common Gerbert abacus.The Hindu-Arabic Numerals
David Eugene Smith
The height of the abacus is one seventh of the height of the capital.
The flowers on the four sides are to be made as large as the height of the abacus.
The abacus has a width equivalent to the thickness of the bottom of a column.
- a counting device that consists of a frame holding rods on which a specific number of beads are free to move. Each rod designates a given denomination, such as units, tens, hundreds, etc, in the decimal system, and each bead represents a digit or a specific number of digits
- architect the flat upper part of the capital of a column
Word Origin and History for abacus
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.