Mathematical term for a shared multiple of the denominators of two or more fractions.
When adding fractions, you first need to find a common denominator.
最小公分母 is the 'least common denominator', the smallest possible common denominator.
lowest common denominator; least common denominator; LCD
Compound of 公 (common, public) and 分母 (denominator). The term is a direct calque from English 'common denominator'.