An ostracon (Greek: ostrakon, plural ostraka) is a piece of
pottery (or stone), usually broken off from a
vase or other
earthenware vessel. In
archaeology, ostraca may contain scratched-in words or other forms of writing which may give clues as to the time when the piece was in use. The word is derived from
Greek ostrakon, meaning a shell or a
shard of
pottery used as a
voting ballot. It is a common error for the plural form ostraca to be used as the singular for ostracon.
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