nic·ti·tat·ing membrane 
(nĭktĭ-tā′tĭng)
(nĭktĭ-tā′tĭng)n.
A transparent inner eyelid in many vertebrates that closes to protect and moisten the eye. Also called third eyelid.
| 单词 | nictitating membrane |
| 释义 | nic·ti·tat·ing membrane (nĭktĭ-tā′tĭng)n. A transparent inner eyelid in many vertebrates that closes to protect and moisten the eye. Also called third eyelid. |
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