A lot vs. Alot: 9 Grammatical Pitfalls
commissure com·mis·sure (kŏm'ə-shur')
A line or place at which two things are joined.
A tract of nerve fibers passing from one side to the other of the spinal cord or brain.
The point, angle, or surface where two parts, such as the eyelids, lips, or cardiac valves, join or connect.