DICT.TW Dictionary Taiwan
18.190.176.176

Search for:
[Show options]
[Pronunciation] [Help] [Database Info] [Server Info]

1 definition found

From: Webster's Revised Unabridged Dictionary (1913)

 Per·i·os·tra·cum n.; pl. Periostraca   Zool. A chitinous membrane covering the exterior of many shells; -- called also epidermis.