This is the 1812th most frequent Russian word.
массовой
"Massive" or "mass," relating to large-scale or widespread.
Here, 'массовой' is used as an adjective to describe an event that involves a large number of people.
Этот концерт является массовым мероприятием.
This concert is a mass event.
In this context, 'массовая' describes the culture intended for the broad public, emphasizing its widespread nature.
Массовая культура оказывает влияние на общество.
Mass culture has an impact on society.
The usage of 'массовое' here emphasizes the comprehensive and general aspect of education provided to a large group of individuals.