1. a multicellular animal organism
Usage: biology

1. relating to or characteristic of multicellular animals
Usage: biology

Examples

• All metazoans evolved from single-celled ancestors.
• The fossil record shows early metazoan life forms from over 500 million years ago.
• Sponges are among the simplest metazoan organisms.
• Metazoan cells are organized into tissues and organs.
• The study focused on metazoan development patterns.
• Scientists compared protozoan and metazoan cellular structures.