noun a plural form of the noun abacus, which is a calculating tool used for arithmetic calculations
Abaci are used as a calculating tool in arithmetic and mathematics.
Abaci have historical significance as ancient counting tools.
Abaci are sometimes used as a teaching aid for learning basic math concepts.
Abaci can be used as artistic objects or motifs in various art forms.
Abaci can be used by writers to help with mathematical calculations in their writing, such as when discussing numerical data or incorporating mathematical concepts into their work.
Psychologists may use abaci as a tool for teaching basic math skills to clients, especially in cognitive behavioral therapy or other forms of therapy that involve numerical exercises.
Abaci are commonly used by accountants to perform quick calculations, especially when dealing with large amounts of financial data or complex mathematical formulas.
Engineers may use abaci to double-check their calculations or to quickly estimate values during the design and construction of various structures or systems.
Architects can use abaci to help with measurements, proportions, and other mathematical calculations when designing buildings or other structures.