Word.ws English Dictionary

periostraca

periostraca is the plural of periostracum.

Meaning of periostracum

Noun

periostracum (plural periostraca or periostracums)

  1. The proteinaceous outer sheath of many molluscan shells.

Questions about periostraca

What is periostraca the plural of?
Periostraca is the plural of periostracum.

Words near periostraca in the dictionary

  1. periostites
  2. periostitic
  3. periostitides
  4. periostitis
  5. periostium
  6. periostraca
  7. periostracal
  8. periostracum
  9. periosts
  10. periot
  11. periotic

Source and license

Adapted from Wiktionary: periostraca (page history and authors); periostracum (page history and authors). Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws reformatted the entry and added links. Wiktionary data of 2026-09-02.

Last updated:

Cite this entry: “periostraca.” Word.ws, https://word.ws/periostraca. Based on Wiktionary, CC BY-SA 4.0.