| the joint of the leg that allows for movement between the femur and tibia and is protected by the patella |
| a group of cells or organ producing a secretion or selectively removing, altering or concentrating materials from blood for elimination from the body |
arachnoid (əˈræknɔɪd) ![]() | |
| —n | |
| 1. | See meninges the middle of the three membranes that cover the brain and spinal cord |
| 2. | another name for arachnid |
| —adj | |
| 3. | of or relating to the middle of the three meninges |
| 4. | botany consisting of or covered with soft fine hairs or fibres |
| 5. | of or relating to the arachnids |
arachnoid a·rach·noid (ə-rāk'noid')
adj.
Resembling a cobweb. Used of the arachnoid membrane covering the brain and spinal cord.
| arachnoid (ə-rāk'noid') Pronunciation Key
The delicate membrane that encloses the spinal cord and brain and lies between the pia mater and dura mater. |