Definitions
American Heritage® Dictionary of the English Language, Fourth Edition
- n. A crossing in the shape of an X.
- n. Anatomy An X-shaped crossing, especially of nerves or bands of nerve fibers, connecting corresponding parts on opposite sides of the brain or spinal cord.
Century Dictionary and Cyclopedia
- n. The act of crossing or intersecting; an intersection; the crossing of two lines, rays, fibers of nerves, etc.
- n. The state of being decussated, or that which decussates; a chiasm.
Wiktionary
- n. A crossing or intersection of lines etc. so as to form an X-shape.
GNU Webster's 1913
- n. Act of crossing at an acute angle, or state of being thus crossed; an intersection in the form of X
WordNet 3.0
Etymologies
- From Latin decussationem, from decussare. (Wiktionary)
Examples
“He described the decussation of the optic nerves and the capsule of the crystalline lens, and gave the first clear description that has survived of the structure of the eye.”
“Prof. Hamilton, of Aberdeen, claims that the corpus callosum is not a commissure, but the decussation of cortical fibers on their way down to enter the internal and external capsules of the opposite side.”
“The red arrow, a, a, indicates the course the lateral cerebrospinal fasciculus takes at the level of the decussation of the pyramids; the blue arrow, b, b, indicates the course which the sensory fibers take.”
“Section of the medulla oblongata through the lower part of the decussation of the pyramids.”
“Transverse section passing through the sensory decussation.”
“The fibers converge toward the angle of the mouth, where the central fibers intersect each other, those from below being continuous with the upper segment of the Orbicularis oris, and those from above with the lower segment; the upper and lower fibers are continued forward into the corresponding lip without decussation.”
“The uppermost and lowermost fibers of the Buccinator pass across the lips from side to side without decussation.”
“The decussation of these sensory fibers is situated above that of the motor fibers, and is named the decussation of the lemniscus or sensory decussation.”
“Its lower part is interrupted by bundles of fibers which cross obliquely from one side to the other, and constitute the pyramidal decussation.”
“When these pyramidal fibers are traced downward it is found that some two-thirds or more of them leave the pyramids in successive bundles, and decussate in the anterior median fissure, forming what is termed the pyramidal decussation.”
Lists
These user-created lists contain the word ‘decussation’.
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SCIE - neurology
abducens.....draw..., ablation.....carr..., acetylcholine......., adrenalin.....nea..., afferent.....to c..., agnosia.....no kn..., alar.....wing-like, alexia.....no words, alveus.....canal, amacrine.....no l..., ambidextrous........, ambiguus.....doub... and 701 more...
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Panvocalics
Panvocalics are words that contain all the vowels. Listed here are "euvocalics": words that have each of the five vowels only once. (These are also a kind of supervocalic.) Words that also have a "...
subcontinental, unoriental, ultraviolet, tourmaline, sequoia, jacqueminot, milquetoast, xenosaurid, thunderation, adenovirus, accoutering, absolutive and 2777 more...
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ananda's list
selcouth, arenicolous, eximious, sciophilous, cynosure, manumit, eclode, diapason, anacrustic, stramash, unguiculation, clishmaclaver and 38 more...
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