1. microscopic aquatic animals with wheel-like rings of cilia used for feeding and locomotion
Usage: biology; plural form

Examples

• Rotifers are commonly found in freshwater ponds and lakes.
• The biology student observed rotifers swimming under the microscope.
• Rotifers use their rotating cilia to create water currents for feeding.
• Many species of rotifers can survive in extreme environmental conditions.
• The aquarium’s ecosystem included various microorganisms like rotifers.
• Rotifers are important members of freshwater plankton communities.