periostracum

Questions

What does periostracum mean?

The proteinaceous outer sheath of many molluscan shells.

Where does periostracum come from?

Literally "surrounding shell", from peri- + ostracum.

How to pronounce periostracum

1. Open the pronunciation page — Open the Speakur entry for “periostracum”.
2. Read the phonetic spelling — Read the IPA spelling () so you know which sounds to aim for.
3. Play the audio — Click Play to hear reference audio for “periostracum”.
4. Repeat and practice — Say “periostracum” aloud, matching stress and vowels until it feels natural.