Word.ws English Dictionary

periostracum

periostracum noun: the proteinaceous outer sheath of many molluscan shells.

Noun

periostracum (plural periostraca or periostracums)

  1. The proteinaceous outer sheath of many molluscan shells.

periostracum meaning in Tamil

periostracum in Tamil

ஒட்டுச்சுற்றி

Forms of periostracum

pluralperiostraca
pluralperiostracums

Origin of periostracum

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

Words formed from periostracum

Questions about periostracum

What does periostracum mean?
Periostracum means the proteinaceous outer sheath of many molluscan shells.
What is periostracum in Tamil?
Periostracum in Tamil is ஒட்டுச்சுற்றி. See Periostracum meaning in Tamil.
What part of speech is periostracum?
Periostracum is a noun.
What is the plural of periostracum?
The plural of periostracum is periostraca.

Words near periostracum in the dictionary

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

Source and license

Adapted from Wiktionary: periostracum (page history and authors); periostracum (Tamil Wiktionary) (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: “periostracum.” Word.ws, https://word.ws/periostracum. Based on Wiktionary, CC BY-SA 4.0.