common denominator

English Thesaurus

1. an attribute that is common to all members of a category (noun.attribute)

hypernym	:	attribute,
definition	:	an abstraction belonging to or characteristic of an entity (noun.tops)

2. an integer that is a common multiple of the denominators of two or more fractions (noun.quantity)

hypernym	:	denominator,
definition	:	the divisor of a fraction (noun.quantity)