Dark
Dark
Dark (/dɑːrk/), from the Old English deorc, is a term often used in the medical field to describe certain conditions, symptoms, or appearances. It is not a medical condition in itself, but a descriptive term used in conjunction with other medical terms.
Etymology
The term "dark" originates from the Old English deorc, which means "absence of light", "obscure", or "morally evil". In the medical context, it is used to describe the color, appearance, or condition of certain symptoms or diseases.
Medical Usage
In medicine, "dark" is often used to describe the color or appearance of certain symptoms or conditions. For example, Dark urine can be a sign of dehydration or certain liver diseases. Dark stool can indicate bleeding in the upper gastrointestinal tract. Dark circles under the eyes can be a sign of fatigue, aging, or certain allergies.
Related Terms
- Dark field microscopy: A microscopy illumination technique used to enhance the contrast in unstained samples.
- Dark adaptation: The process by which the eyes increase their sensitivity to low levels of light.
- Dark therapy: A treatment for mania that involves staying in a dark room for extended periods of time.
Pronunciation
The term "dark" is pronounced as /dɑːrk/.
See Also
External links
- Medical encyclopedia article on Dark
- Wikipedia's article - Dark
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