multiplicative (adjective)

1. In the novel, the protagonist's ambition has a multiplicative effect on the plot, leading to a series of unexpected consequences.

2. The invention of the printing press had a multiplicative impact on the spread of knowledge and ideas during the Renaissance.

3. The introduction of social media platforms has a multiplicative effect on fashion trends, allowing them to spread rapidly across the globe.

4. Incorporating mirrors into the design of a small room can have a multiplicative effect, creating an illusion of spaciousness.