All terms that start with the letter N
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nevus
A mole or other colored spot on the skin.
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nicotine
A highly toxic and addictive component of tobacco. While the amounts obtained from smoking may not be enough to be…
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night blindness
A reduced ability to see in dim light. May be caused by a vitamin-A deficiency or glaucoma.
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nit
The egg of a louse.
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nocturia
Excessive urination at night.
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node
A swelling, knot or knob.
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nonunion
Failure of the ends of a broken bone to mend.
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norepinephrine
A hormone produced by the adrenal medulla and certain sympathetic nerve fibers.
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nosocomial
Having to do with the hospital. For example, an nosocomial infection is one that’s acquired during hospitalization.
