lowest common denominator
noun
1- Mathematics the lowest common multiple of the denominators of several vulgar fractions【数】最小公分母。
1.1
- figurative the broadest or most widely applicable requirement or circumstance〈喻〉符合最大多数人们要求的东西, 雅俗共赏的特性。
1.2
- derogatory the level of the least discriminating audience or consumer group〈贬〉最缺少鉴别力的观众（或听众）所具有的水平; 最不识货的消费群体所具有的水平。