commissure

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Related to middle commissure: Anterior commissure

commissure

 [kom´ĭ-shūr]
1. a site of union of corresponding parts, such as the angle of the lips or eyelids.
2. the site of junction between adjacent cusps of a cardiac valve.
anterior commissure the band of fibers connecting the parts of the two cerebral hemispheres.
commissure of epithalamus a large fiber bundle that crosses the midline of the epithalamus just dorsal to the point where the cerebral aqueduct opens into the third ventricle.
middle commissure a band of gray matter joining the optic thalami; it develops as a secondary adhesion and may be absent.
posterior commissure commissure of epithalamus.

com·mis·sure

(kom'i-shūr), [TA]
1. Angle or corner of the eye, lips, or labia.
2. A bundle of nerve fibers passing from one side in the brain or spinal cord to the other.
Synonym(s): commissura [TA]

commissure

(kŏm′ə-sho͝or′)
n.
1. A line or place at which two things are joined.
2. Anatomy
a. A tract of nerve fibers passing from one side to the other of the spinal cord or brain.
b. The point or surface where two parts, such as the eyelids, lips, or cardiac valves, join or form a connection.
3. Botany The surface or place along which two structures, such as carpels, are joined.

com′mis·su′ral adj.

com·mis·sure

(kom'i-shŭr) [TA]
1. Angle or corner of the eye, lips, or labia.
2. A bundle of nerve fibers passing from one side to the other in the brain or spinal cord.
Synonym(s): commissura [TA] .

commissure

1. A line or point at which two things are joined.
2. A nerve fibre bundle passing from one side of the brain or spinal cord to the other to connect similar structures.

commissure 

Band of nerve fibres connecting corresponding structures in the brain or spinal cord. See corpus callosum.

com·mis·sure

(kom'i-shŭr) [TA]
1. Angle or corner of the eye, lips, or labia.
2. A bundle of nerve fibers passing from one side in the brain or spinal cord to the other.