noun
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An arachnid
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The arachnoid mater, the middle layer of the meninges, the three membranes that protect the brain
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A round network of fractures in the crust of Venus
adjective
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Relating to or resembling spiders.
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Relating to or resembling spider webs.
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Relating to the arachnoid mater, the middle layer of the meninges, the three membranes that protect the brain.
Examples of arachnoid in a Sentence
These membranes are called the meninges, the outermost membrane is called the dura mater, then the arachnoid and then the pia mater.
The lobes of the cerebral hemisphere, optic nerves, arachnoid granulations and blood vessels are all identified.
However, no cases of chronic hydrocephalus and suprasellar arachnoid cyst presenting with rhinorrhea as the unique clinical manifestation are reported in the literature.
Subarachnoid hemorrhage-A collection of blood in the subarachnoid space, the space between the arachnoid and pia mater membranes that surround the brain.
Subarachnoid-Referring to the space underneath the arachnoid membrane, the middle of the three membranes that sheath the spinal cord and brain.
Subdural hematoma-A localized accumulation of blood, sometimes mixed with spinal fluid, in the space between the middle (arachnoid) and outer (dura mater) membranes covering the brain.
The middle layer is the arachnoid mater, and the layer closest to the brain tissue is the pia mater.
Meninges-The three-layer membranous covering of the brain and spinal cord, composed of the dura mater, arachnoid, and pia mater.
The innermost layer is called the pia mater, the middle layer is the arachnoid, and the dura mater is the tougher outer layer.