1. a person or thing that causes something to increase rapidly or spread widely
Usage: often used in scientific, medical, or technical contexts
2. a substance or agent that promotes cell division or growth
Usage: biology, medicine

Examples

• Social media has become a major proliferator of misinformation.
• The drug acts as a proliferator of cancer cells in laboratory tests.
• Plastic waste is a significant proliferator of pollution in our oceans.
• The company was identified as a proliferator of counterfeit goods.
• Certain proteins serve as proliferators of immune system responses.
• Weeds are natural proliferators in untended gardens.