Mindblown: a blog about philosophy.
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Urethral opening
The meatus of the urethra.
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Urethral bulb
An enlarged section of the urethra at the base of the penis in which semen collects prior to ejaculation, causing sensations of ejaculatory inevitability.
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Urbanize
To change from rural to urban in characteristic.
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Uptake
The process by which a cell expends energy to increase the concentration of certain chemicals within itself, e.g., precursor substances taken in by a neuron that will be synthesized into neurotransmitters. The absorption of nutrients, chemicals (including radioactive materials), and medicines by tissues or by an entire organism.
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Unweighted average
In epidemiology, providing equal weight to each component on the average, weighted average.
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Unstable angina
Pain of angina pectoris when there is a pronounced occlusion of an artery in the heart. The pain is often frequent and severe. This may be a forewarning of a possible myocardial infarction stable angina. Angina which has suddenly become worse. Angina that has changed to a more frequent and more severe form. It can…
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Unsocialized-aggressive delinquency
Juvenile behavior whose adult counterpart is sociopathic behavior.
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Unsalted; salt free; without salt added (on food labels)
No salt added during processing, but salt may be present that occurs naturally or from other ingredients low sodium.
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Unrelated subfamily
A group of two or more people who are related to each other by birth, marriage, or adoption but are not related to the householder.
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Unproven methods of cancer control
A variety of purported cancer treatments or cures that have little or no scientific evidence of their effectiveness.
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