A a


    • US Pronunciation
    • US IPA
    • UK Pronunciation
    • UK IPA
    • [ab-uh-kuh s, uh-bak-uh s]
    • /ˈæb ə kəs, əˈbæk əs/
    • /ˈæb.ə.kəs/
    • US Pronunciation
    • US IPA
    • [ab-uh-kuh s, uh-bak-uh s]
    • /ˈæb ə kəs, əˈbæk əs/

Definitions of abacus word

  • countable noun abacus An abacus is a frame used for counting. It has rods with sliding beads on them. 3
  • noun 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 3
  • noun abacus the flat upper part of the capital of a column 3
  • noun abacus a frame with beads or balls that can be slid on wires or in slots, for doing or teaching arithmetic 3
  • noun abacus a slab forming the uppermost part of the capital of a column 3
  • noun plural abacus a device for making arithmetic calculations, consisting of a frame set with rods on which balls or beads are moved. 1

Information block about the term

Origin of abacus

First appearance:

before 1350
One of the 20% oldest English words
1350-1400; Middle English < Latin: board, counting board, re-formed < Greek ábax

Historical Comparancy

Parts of speech for Abacus


abacus popularity

A common word. It’s meaning is known to most children of preschool age. About 81% of English native speakers know the meaning and use the word.
Most Europeans know this English word. The frequency of it’s usage is somewhere between "mom" and "screwdriver".

abacus usage trend in Literature

This diagram is provided by Google Ngram Viewer

Synonyms for abacus

noun abacus

  • clone — If someone or something is a clone of another person or thing, they are so similar to this person or thing that they seem to be exactly the same as them.
  • brain — Your brain is the organ inside your head that controls your body's activities and enables you to think and to feel things such as heat and pain.
  • calculator — A calculator is a small electronic device that you use for making mathematical calculations.
  • adding machine — a mechanical device, operated manually or electrically, for adding and often subtracting, multiplying, and dividing
  • number cruncher — a person or thing that performs a great many numerical calculations, as a financial analyst, statistician, computer, or computer program.

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See also

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