1. the system of performing arithmetic using Arabic numerals (0–9) and place value
Usage: archaic or historical usage; largely superseded by 'algorithm' in modern contexts
2. a step-by-step procedure or set of rules for solving a problem or performing a calculation
Usage: rare in modern English; 'algorithm' is the standard term

Examples

• Medieval scholars gradually adopted algorism as a faster alternative to Roman numeral calculations.
• The introduction of algorism revolutionized mathematical practice in Europe during the Renaissance.
• Students in the 13th century had to master algorism to perform complex arithmetic.
• Algorism laid the foundation for modern computational methods.
• The term 'algorism' derives from the name of the Persian mathematician Al-Khwarizmi.