Nervosa has no real definition in the English language. In Latin, it means "nervous".

For contextual purposes, it means "the psychological addiction to a behavior, belief, or habit" that effects the body via the nervous system, or the mind.

It is also a word commonly used in reference to botany. Nervosa, when used in botany, describes a trunk or tree like pattern of veins within the leaves.
Mary Sue has fallen prey to Anorexia Nervosa?

Psychotria Nervosa has beautiful, bright green leaves.
by l2isen August 23, 2011
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Nervosa means "the psychological addiction to a behavior, belief, or habit".
An example would be Anorexia Nervosa. Anorexia being in which someone starved themself / a serious mental disorder, where people (usually females) have a strong need to lose weight. When you combined Anorexia and Nervosa it would mean the addiction to the behavior, belief, or habit, of starvation.
by pro-ana blogger October 22, 2019
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When an emo person decides to call themself something.
emo screename = CelseteNervosa
by xDxUxZx August 20, 2006
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A person suffering from Atypical Anorexia (AAN) must show body dissatisfaction, intentional restrictive behavior, and fear of gaining weight while maintaining a BMI of <18.5 and typically fall within the normal to the overweight range.

HAES-supportive nutritionists, wellness advisors, and other non-physicians from within the industry have bastardized the diagnosis of AAN while attempting to free their clients from “diet culture” and encouraging those to eat “what you want, whenever you want”. This trend harms the person by not acknowledging the self-destructive behaviour inherent in bingeing and using food for pleasure. Many consider this a misclassification of Eating Disorders, primarily Binge-Eating Disorder (BED), in an attempt to separate themselves from the stigma and shame related to gluttony and overindulgence. Unfortunately, this is at the expense of those who truly suffer from AAN since they are already underrepresented in medical literature and considered not severe enough for treatment.

Recently, Tess Holliday declared she was diagnosed with Anorexia at around 350lbs. In contrast to her claims, her social media features a plentitude of sweets, cakes, and takeout consumed on a weekly basis without shame. Such a false diagnosis of Atypical Anorexia is coined as Tessorexia Nervosa. Often individuals who are suffering from Tessorexia claim to be in recovery from Anorexia and any attempt to modify their diet would trigger a relapse causing them to waste away.
I suffer from Tessorexia Nervosa! I’m in recovery from Anorexia! Don’t talk to me about my diet or I’ll starve myself again and it will be your fault!
by unotmebye October 15, 2021
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Audiophilia nervosa describes the anxiety resulting from the never-ending quest to obtain the ultimate performance from one's stereo system by means of employing state-of-the-art components, cables, and the use of certain "tweaks."

Although the goal is supposedly to achieve maximum appreciation of the music, those afflicted with this condition are merely obsesed with their electronics.
Todd had spent well over $100,000 in speakers,monoblock amplifiers, fiber optic cables, Shakti stones, pre-amolifiers, and other equipment and tweaks. And yet he still wasn't convinced that Diana Krall's voice sounded "silky" enough.

Todd was in deep denial concerning his audiophilia nervosa, and his wife was on the verge of calling a divorce lawyer.
by whimzzical June 18, 2010
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Anorexia Nervosa (AN) essentially refers to a mental illness affecting both genders, but primarily females, whereby an individual has irregular perceptions of their body image. This causes them to develop extreme trepidation at the prospect of weight gain, dieting, starving themself, frequent exercise and calorie counting which subsequentally gives them what is known as emaciation. It requires inordinate amounts of mental and physical concentration and efforts if one wishes to conquer it, although they never really "conquer" it as it is still in them somewhere. Similarly, people with this eating disorder tend to have a very low body mass index (bmi), usually 16 or lower to the point where they may need a feeding tube. If it gets to the point where it gets below fifteen, without serious treatment, the patient will die, at least it is very feasible!
My friend is suffering from the eating disorder, Anorexia Nervosa.
by lovermangenius May 4, 2015
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An eating disorder where one will binge eat then get rid of the food afterward, such as using laxatives or diuretics, or exercising excessively, or using self induced vomiting.

Bulimia's Side Effects: erosion of the esophagus, thin hair, rotting teeth, brittle nails and bones, acid reflux, normal but fluctuating weight, anxiety, chest problems, anemia, depression, self harm, shrunken internal organs, loss of menstrual cycle in females, bad body image, bladder and bowel incontinence, deteriorating muscles, digestive issues, mental problems, drug use, etc.
Anorexia Nervosa, EDNOS, and Bulimia Nervosa are the most complex and deadly diseases known.
by Semper_Fidelis August 13, 2015
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