1. tiny fragments of plastic, typically smaller than 5 millimeters, that result from the breakdown of larger plastic items or are manufactured at small sizes for use in consumer products.
Usage: usually used in plural form; environmental and scientific term

Examples

• Microplastics have been found in ocean water and marine life around the world.
• Scientists are concerned about the accumulation of microplastics in drinking water.
• Some cosmetics and personal care products contain microplastics as exfoliating agents.
• Microplastics from discarded plastic bags break down into smaller particles over time.
• Researchers are studying how microplastics affect human health when ingested.
• The presence of microplastics in soil may impact agricultural ecosystems.