trivalve
/ˈtraɪvælv/
adjective
- Having three valves or sections that open, like some seashells or mechanical parts.
- Engineers designed a trivalve pump to control the flow of liquid.
- The trivalve shell of the brachiopod is a rare find on the beach.
- The trivalve casing opens in three directions for easy access.
noun
- A seashell or other object that has three valves or hinged parts.
- The collector added a trivalve to his cabinet of unusual shells.
- Fossil hunters discovered a trivalve embedded in the limestone.
- This trivalve is actually a type of ancient mollusk.