abacus

From Wiktionary
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Pronunciation[change]

  • (UK) (US) IPA (key): /ˈæbəkəs/
  • (file)
  • Hyphenation: aba‧cus

Noun[change]

Singular
abacus

Plural
abacuses or abaci

An abacus
  1. (countable) An abacus is an ancient calculating device. It is made of a frame with beads on various rods.