1. relating to or located around the mouth or oral opening of an organism
Usage: biological; technical

Examples

• The peristomial area of the sea anemone contains specialized cells for capturing prey.
• Researchers examined the peristomial structures of various marine invertebrates.
• The peristomial region showed distinct coloration patterns in the specimen.
• Peristomial teeth help certain organisms process food before swallowing.
• The biologist noted unusual peristomial features in the newly discovered species.