American Heritage® Dictionary of the English Language, Fourth Edition
- n. A line or place at which two things are joined.
- n. Anatomy A tract of nerve fibers passing from one side to the other of the spinal cord or brain.
- n. Anatomy The point or surface where two parts, such as the eyelids, lips, or cardiac valves, join or form a connection.
- n. Botany The surface or place along which two structures, such as carpels, are joined.
Century Dictionary and Cyclopedia
- n. A joint, seam, suture, or closure; the place where two bodies or parts of a body meet or unite. Specifically— In anatomy: A suture of cranial bones. The joining of the lips, eyelids, etc., at their angles. See phrases below.
- n. That which joins or connects. Specifically— In anatomy, one of certain bands of nerve-tissue, white or gray, connecting right and left parts of the brain and spinal cord.
- n. the place where two things are joined, especially the line where two parts of an anatomical structure join
GNU Webster's 1913
- n. A joint, seam, or closure; the place where two bodies, or parts of a body, meet and unite; an interstice, cleft, or juncture.
- n. The point of union between two parts, as the angles of the lips or eyelids, the mandibles of a bird, etc.
- n. A collection of fibers connecting parts of the brain or spinal marrow; a chiasma.
- n. (Bot.) The line of junction or cohering face of two carpels, as in the parsnip, caraway, etc.
- n. a bundle of nerve fibers passing from one side to the other of the brain or spinal cord
- Middle English, from Latin commissūra, from commissus, past participle of committere, to join; see commit. (American Heritage® Dictionary of the English Language, Fourth Edition)
“If any thought by flight to escape, he made his head to fly in pieces by the lamboidal commissure, which is a seam in the hinder part of the skull.”
“Normally, both cerebral hemispheres are linked through the cerebral commissure, which is built up of hundreds of millions of nerve fibers.”
“It contains a double fold of pia mater, and its floor is formed by a transverse band of white substance, the anterior white commissure, which is perforated by bloodvessels on their way to or from the central part of the medulla spinalis.”
“_Aphonia_ due to cicatricial webs of the larynx may be cured by plastic operations that reform the cords, with a clean, sharp anterior commissure, which is a necessity for clear phonation.”
“Where the thalami come together and touch or unite on the median line, the junction is called a commissure (commiss. med.) and the space between them where they do not touch is called the third ventricle”
“- WOMENThe larger commissure in women may be another reason their two cerebral hemispheres seem to work in partnership on tasks from language to emotional responses.”
“- MENIn men, the commissure is smaller than it is in women, even though men's brains are, on average, larger than women's. ..”
“No. 1 gashes a line from the root of the hair to the commissure of the nose: No. 2 has”
“Our prefrontal cortexes where we organize thoughts and can think contextually are larger, and the bridges that connect the right and left hemispheres of our brains, the corpus callosum and the anterior commissure, are both significantly larger too.”
“Recent neuroanatomical studies have revealed differences between heterosexual and homosexual men in the structure of three regions of the brain; namely, the third interstitial nucleus of the anterior hypothalamus (6), the anterior commissure (7), and the suprachiasmatic nucleus (8).”
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