dis-, di-, dif-
(Latin: separation, apart, asunder; removal, away, from; negation, deprivation, undoing, reversal, utterly, completely; in different directions)
The meaning of dis- varies with different words; dif-, assimilated form of dis- before f; di-, form of dis- before b, d, g, l, m, n, r, and v.
Most commonly a discectomy is done when a disc is herniated (slipped disc) and is causing symptoms of pain and nerve irritation or injury.
Sometimes, a discectomy is done to stop the motion across a portion of the spine and create a solid structure (spinal fusion).
Motto inscribed on the east facade of Brookings Hall; Washington University, St. Louis, Missouri, USA.
2. To understand something that is not immediately obvious.
3. To be able to tell the difference between two or more things.
4. To distinguish something apart from its surroundings or background.
2. Someone who knows and judges or who has the power of distinguishing: "He was a great observer and discerner of men's natures and humors."
3. That which distinguishes or causes understanding.
2. Concerning how something or someone is seen or visible: After their hike up the mountain, Jack and Jill mentioned to their friends that the mountain tops were discernibly perceptible above the layer of fog stretching across the landscape.
2. Descriptive of showing keen insight and making good decisions: The discerning mechanic was able to quickly determine what was wrong with David's car when it wouldn't start and to fix the problem.
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2. The act or process of perceiving something or exhibiting keen insight and good judgment: Gertrude was studying at the university so she could have a better discernment regarding the best vocational career to strive for.