Noun
A joint, seam, or closure; the place where two bodies, or parts of a body, meet and unite; an interstice, cleft, or juncture.
The point of union between two parts, as the angles of the lips or eyelids, the mandibles of a bird, etc.
A collection of fibers connecting parts of the brain or spinal marrow; a chiasma.
The line of junction or cohering face of two carpels, as in the parsnip, caraway, etc.
Source: Webster's dictionaryAdditional images Coronal section of brain through anterior commissure Horizontal section of right cerebral hemisphere. Source: Internet
Fibers cross over (left becomes right) via the spinal anterior white commissure. Source: Internet
In the rat, the two hippocampi resemble a pair of bananas, joined at the stems by the hippocampal commissure that crosses the midline under the anterior corpus callosum. Source: Internet