Word: periostracum
Part of speech: Noun
Syllables: per
i
os
tra
cum
Definition: The proteinaceous outer sheath of many molluscan shells.
Morphemes:
Affix: peri-
Language: en
PoS: Prefix
Meaning: around or surrounding
Etymology Compounds: Affix: περί
Language: grc
Decoded: peri
Meaning: about, around
Affix: ostracum
Language: en
PoS: Noun
Meaning: The middle layer of a molluscan shell.
Etymology Compounds: Affix: ὄστρακον
Language: grc
Decoded: ostrakon
Meaning: pottery fragment; shell