# abacus

- 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

## Related Words for abacus

clone, brain, calculator, mini, laptop, minicomputer, CPU, PC, mac, mainframe, abacus, microcomputer, analog, computer, totalizer, digital, micro## Examples from the Web for abacus

### Contemporary Examples of abacus

### Historical Examples of abacus

Abacus, a square tablet which crowns the capital of the column.

ArchitectureThomas Roger Smith

This, as pictured in the text, is the common Gerbert abacus.

The Hindu-Arabic NumeralsDavid Eugene Smith

The height of the abacus is one seventh of the height of the capital.

Ten Books on ArchitectureVitruvius

The flowers on the four sides are to be made as large as the height of the abacus.

Ten Books on ArchitectureVitruvius

The abacus has a width equivalent to the thickness of the bottom of a column.

Ten Books on ArchitectureVitruvius

## abacus

- 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 for abacus

## 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.