ABACUS


Meaning of ABACUS in English

[aba.cus] n, pl aba.ci or aba.cus.es [L, fr. Gk abak-, abax, lit., slab] (14c) 1: an instrument for performing calculations by sliding counters along rods or in grooves

2: a slab that forms the uppermost member or division of the capital of a column

Merriam-Webster English vocab.      Английский словарь Merriam Webster.