Arachnoid cyst
arachnoid cyst
arachnoid cyst n.
a fluid-filled cyst lined with arachnoid membrane, frequently situated in the sylvian fissure of the brain.
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- Arachnoid membrane
arachnoid membrane arachnoid membrane n. a delicate fibrous membrane forming the middle of the three coverings of the brain and spinal cord, closely attached to the dura mater, from which it is separated only by the subdural cleft, but separated from the pia mater by the subarachnoid sp-ce.
- Arachnoid villus
arachnoid villus arachnoid villus n. see arachnoid granulation.
- Arachnoiditis
arachnoiditis arachnoiditis a·rach·noid·i·tis (ə-rāk’noi-dī’tĭs) n. inflammation of the arachnoid membrane and subarachnoid sp-ce.
- Arachnology
noun the study of arachnids
- Arachnophobic
an abnormal or pathological fear of spiders. noun an abnormal fear of spiders n. 1925, from comb. form of arachnid + -phobia “fear.” arachnophobia a·rach·no·pho·bi·a (ə-rāk’nə-fō’bē-ə, -nō-) or a·rach·ne·pho·bi·a (ə-rāk’nə-) n. an abnormal fear of spiders.