periostracum /per-i-osˈtrə-kəm/

The horny outer layer of a mollusc's shell

• indew
• indewed
• indewing
• indews
• index
• indexal
• indexation
• indexations
• index auctorum
• index case
• index cases
• indexed
• indexer
• indexers
• indexes
• Index Expurgatorius
• index-finger
• index fossil
• index fossils
• index fund
• index funds
• indexical
• indexing
• indexings
• index learning