[ ab-uh-kuhs, uh-bak-uhs ]
/ 藞忙b 蓹 k蓹s, 蓹藞b忙k 蓹s /
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noun, plural ab路a路cus路es, ab路a路ci [ab-uh-sahy, -kahy, uh-bak-ahy]. /藞忙b 蓹藢sa瑟, -藢ka瑟, 蓹藞b忙k a瑟/.
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.
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Origin of abacus

1350鈥1400; Middle English <Latin: board, counting board, re-formed <Greek 谩bax
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, 漏 Random House, Inc. 2021

How to use abacus in a sentence

British Dictionary definitions for abacus

/ (藞忙b蓹k蓹s) /

noun plural -ci (-藢sa瑟) or -cuses
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

C16: from Latin, from Greek abax board covered with sand for tracing calculations, from Hebrew 膩bh膩q dust
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition 漏 William Collins Sons & Co. Ltd. 1979, 1986 漏 HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012