Category: N

  • Nonessential fat

    Any body fat that is more than what we need for normal physiological function.  

  • Natural environment

    Everything nonhuman that surrounds and influences a person.  

  • Nicotine withdrawal

    A reaction to the lack of nicotine in the body.  

  • Neighborhood crime watch

    A group of volunteers who report suspicious activities in their neighborhood to the police.  

  • Neuropsychologist

    A psychologist with specialized training in the evaluation of cognitive functions. Neuropsychologists use a battery of standardized tests to assess specific cognitive functions and identify areas of cognitive impairment. They also provide remediation for individuals with MS-related cognitive impairment. A clinical psychologist with expertise in evaluating psychological well-being affected by a brain disorder.  

  • Nerve cell

    A type of cell that receives and sends messages from the body to the brain and back to the body. The messages are sent by a weak electrical current. Also called a neuron. Tiny bundles of fibers that exchange chemical and electrical messages with the brain.  

  • Notching

    Version of point cutting in which the tips of the scissors are moved toward the hair ends rather than into them; creates a chunkier effect. A rib surface abnormality frequently linked to coarctation of the aorta is referred to as a deformity.  

  • No-stem curl

    Curl placed directly on its base; produces a tight, firm, long-lasting curl and allows minimum mobility.  

  • Normalizing lotions

    Conditioners with an acidic pH that restore the hair’s natural pH after a hydroxide relaxer and for shampooing.  

  • Nonstripping

    Product that does not remove artificial color from the hair.