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periostracum

/,peri'ɔstrәkәm/

📖 中文释义

  1. n. (软体动物介壳的) 角质层

🔗 释义中的汉语词

📘 English Definition(英文释义)
  1. n. A chitinous membrane covering the exterior of many
  2. shells; -- called also epidermis.