1. a small flatworm that lives in freshwater and has the ability to regenerate lost body parts
Usage: biology

Examples

• The biology students observed planaria under the microscope.
• When cut in half, a planaria can regenerate into two complete organisms.
• Planaria are commonly used in regeneration experiments.
• The pond water contained several species of planaria.
• Scientists study planaria to understand tissue regeneration.
• The planaria glided smoothly across the bottom of the petri dish.