ˈabə̇kəs, əˈbak- also əˈbäk- or əˈbȧk- noun
( plural aba·ci ˈabəˌsī, -ˌkī, -ˌkē, əˈbaˌkī also əˈbäˌkī or -bȧ- or -ˌkē ; or ab·acus·es )
Etymology: Latin, from Greek abak-, abax, literally, slab
1. : a slab that forms the uppermost member or division of the capital of a column and that supports the architrave
2. : a calculating instrument for performing arithmetical processes by sliding counters by hand on rods or in grooves
[s]abacus.jpg[/s] [
abacus 2
]