n 1  :  a point or line of union or junction between two anatomical parts (as the lips at their angles or adjacent heart valves)  2  :  a connecting band of nerve tissue in the brain or spinal cord - see ANTERIOR COMMISSURE CORPUS CALLOSUM GRAY COMMISSURE HABENULAR COMMISSURE HIPPOCAMPAL COMMISSURE POSTERIOR COMMISSURE  - compare MASSA INTERMEDIA  com*mis*su*ral adj 
 
 
 
Similar sounding terms:  com·mis·su·ra 
 
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