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necrophilia

A paraphilia characterized by sexual arousal from, or activity with, a corpse.

 

neonate

A newborn.

 

NGU

Abbreviation for nongonococcal urethritis.

 

nipple

The darkened circle at the tip of the breast in both men and women. Although sensitive to sexual stimulation in both genders, in a woman it also serves the function of being the opening through which milk goes when she is breast-feeding.

 

nocturnal emission

Ejaculation of semen during sleep.

 

nocturnal orgasm

Orgasm that occurs during sleep.

 

nonfetishistic transvestism

A nonparaphilic behavior by a person who cross-dresses to relieve the tensions associated with having to maintain the sex-role of their gender.

 

nongonococcal urethritis (NGU)

Urethral inflammation caused by something other than gonorrhea.

 

nonoxynol-9

The sperm-killing chemical in many spermicides.

 

nonspecific urethritis (NSU)

Inflammation of the urethra from an unknown or unspecified cause.

 

nonspecific paraphilia

A paraphilia that does not meet the criteria of any of the major paraphilias.

 

normative

The average response of members of a sample.

 

Norplant

The brand-name of a contraceptive implant, inserted into a woman's upper arm, that time-releases progestin to inhibit ovulation.

 

nulliparous

A woman who has never given birth.

 

nymphomania

A pejorative, unscientific term that is used to refer to sexual behavior or desire in women that is considered "excessive" or "abnormal."