First Known Use: 15th century
Dictionary
commissure
noun com·mis·sure \ˈkä-mə-ˌshu̇r\
Definition of COMMISSURE
1
: a point or line of union or junction especially between two anatomical parts (as adjacent heart valves)
2
: a connecting band of nerve tissue in the brain or spinal cord
— com·mis·sur·al \ˌkä-mə-ˈshu̇r-əl\ adjective
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Origin of COMMISSURE
Middle English, from Middle French or Latin; Middle French, from Latin commissura a joining, from commissus, past participle
Medical Dictionary
commissure
noun com·mis·sure \ˈkäm-ə-ˌshu̇(ə)r\
Medical Definition of COMMISSURE
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 \ˌkäm-ə-ˈshu̇r-əl\ adjective
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