1. of or relating to an animal that lacks a body cavity (coelom) between the digestive tract and body wall
Usage: biology; zoology

1. an animal that lacks a body cavity (coelom), such as a flatworm or roundworm
Usage: biology; zoology

Examples

• Flatworms are acoelomate organisms with no distinct body cavity.
• The acoelomate body plan is considered more primitive than the coelomate design.
• In biology class, we learned that planarians are acoelomates.
• Acoelomate animals have their organs packed directly between the outer and inner tissue layers.
• Unlike mammals, acoelomates do not possess a true coelom.