Periostracum Definition

pĕrē-ŏstrə-kəm
noun
A horny covering, secreted as the outermost layer of most mollusk shells, that protects the underlying shell from erosion.
Webster's New World

Other Word Forms of Periostracum

Noun

Singular:
periostracum
Plural:
periostraca

Origin of Periostracum

  • New Latin peri– Greek ostrakon shell ost- in Indo-European roots

    From American Heritage Dictionary of the English Language, 5th Edition

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

    From Wiktionary

Periostracum Is Also Mentioned In

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Words Starting With

PPEPER

Words Ending With

MUMCUM

Unscrambles

periostracum

Words Starting With P and Ending With M

Starts With P & Ends With MStarts With PE & Ends With MStarts With P & Ends With UM

Word Length

12 Letter Words12 Letter Words Starting With P12 Letter Words Ending With M