1. relating to or having the characteristics of a siphon
Usage: technical
2. relating to a tubular structure used for drawing in or expelling water in certain mollusks
Usage: zoology

Examples

• The siphonal canal allows the mollusk to extend its feeding tube.
• Marine biologists studied the siphonal structures of various clam species.
• The siphonal opening was clearly visible in the shell specimen.
• Researchers examined the siphonal mechanisms in different aquatic invertebrates.
• The siphonal system helps the organism filter water for nutrients.
• Ancient fossils showed well-preserved siphonal features.