Definition of "abacus"
- noun
A tray strewn with dust or sand, used in ancient times for calculating.
A contrivance for calculating, consisting of beads or balls strung on wires or rods set in a frame.
In architecture: The slab or plinth which forms the upper member of the capital of a column or pillar, and upon which rests, in classic styles, the lower surface of the architrave.
Any rectangular slab or piece; especially, a stone or marble tablet serving as a sideboard, shelf, or credence.
In Roman antiquity, a board divided into compartments, for use in a game of the nature of draughts, etc.
The mystic staff carried by the grand master of the Templars.
The structure and arrangement of the keys or pedals of a musical instrument.
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