Medical Webbook

Lack of orgasm

Orgasm, Iack of

The inability to achieve orgasm. Lack of orgasm is the most common sexual problem in women. Between 30 and 50 percent experience difficulties at some time in their lives. The once-used term “frigidity” to describe lack of orgasm is outmoded and...

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organ transplant

Organ donation

The agreement of a person (or his or her relatives) to the surgical removal of one or more organs for use in transplant surgery. Most organs used as transplants are removed immediately after death, but a kidney is...

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orbit eye

Orbit

The socket in the skull that contains the eyeball, protective pads of fat, and various blood vessels, muscles, and nerves. An opening in the back of the orbit allows the optic nerae to pass from the eyeball into the...

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Oral hygiene

Oral hygiene

Measures that keep the mouth and teeth clean and healthy. Good oral hygiene reduces the incidence of tooth decay (see Caries, dental), prevents gingiaitis and other gum disorders, and helps prevent halitosis (bad breath). Oral hygiene is broadly divided into personal...

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