Dwarfs - are absolutelyDie Zukunft der Arbeit im "Reality Check". Learn more about next: Ewa Bocian evolutionary catalyst. Valerie Schneglberger evolutionary catalyst. Um Vokabeln speichern und später lernen zu können, müssen Sie angemeldet sein.
First Known Use of dwarf Noun before the 12th century, in the meaning defined at sense 1a Verb circa , in the meaning defined at transitive sense 1 Adjective , in the meaning defined above.
Learn More about dwarf. Resources for dwarf Time Traveler! Explore the year a word first appeared. Dictionary Entries near dwarf dwale dwall dwalm dwarf dwarf agave dwarf alder dwarf apple.
Time Traveler for dwarf The first known use of dwarf was before the 12th century See more words from the same century. More Definitions for dwarf.
Financial Definition of dwarf. What It Is In the mortgage business, a dwarf is a group of mortgage-backed securities that mature in fewer than 15 years.
Why It Matters For investors, an MBS is much like a bond, and dwarves are relatively short-term bonds in this sense However, it is important to note that payments that are part interest and part principal could be unfavorable to some dwarf investors, because with each decrease in outstanding principal there is a corresponding decrease in the amount of interest that accrues.
More from Merriam-Webster on dwarf Rhyming Dictionary: Words that rhyme with dwarf Thesaurus: All synonyms and antonyms for dwarf Spanish Central: Translation of dwarf Nglish: Translation of dwarf for Spanish Speakers Britannica English: Translation of dwarf for Arabic Speakers Britannica.
Comments on dwarf What made you want to look up dwarf? Get Word of the Day daily email! Need even more definitions? Words at Play New England vs. A Battle of Words Boston vs.
If a pair of achondroplasia alleles are present, the result is fatal. Achondroplasia is a mutation in the fibroblast growth factor receptor 3. Research by urologist Harry Fisch of the Male Reproductive Center at Columbia Presbyterian Hospital indicates that in humans this defect may be exclusively inherited from the father and becomes increasingly probable with paternal age: Growth hormone deficiency GHD is a medical condition in which the body produces insufficient growth hormone.
Growth hormone, also called somatotropin , is a polypeptide hormone which stimulates growth and cell reproduction.
If this hormone is lacking, stunted or even halted growth may become apparent. Children with this disorder may grow slowly and puberty may be delayed by several years or indefinitely.
Growth hormone deficiency has no single definite cause. Laron syndrome growth hormone insensitivity is another cause. Those with growth hormone issues tend to be proportionate.
Other causes of dwarfism are spondyloepiphyseal dysplasia congenita , diastrophic dysplasia , pseudoachondroplasia , hypochondroplasia , Noonan syndrome , primordial dwarfism , Turner syndrome , osteogenesis imperfecta OI , and hypothyroidism.
Severe shortness with skeletal distortion also occurs in several of the Mucopolysaccharidoses and other storage disorders.
Serious chronic illnesses may produce dwarfism as a side effect. Harsh environmental conditions, such as malnutrition, may also produce dwarfism.
These types of dwarfism are indirect consequences of the generally unhealthy or malnourished condition of the individual, and not of any specific disease.
The dwarfism often takes the form of simple short stature, without any deformities, thus leading to proportionate dwarfism.
In societies where poor nutrition is widespread, the average height of the population may be reduced below its genetic potential by the lack of proper nutrition.
Sometimes there is no definitive cause of short stature. Dwarfism is often diagnosed in childhood on the basis of visible symptoms.
A physical examination can usually suffice to diagnose certain types of dwarfism, but genetic testing and diagnostic imaging may be used to determine the exact condition.
Short stature or stunted growth during youth is usually what brings the condition to medical attention. Skeletal dysplasia is usually suspected because of obvious physical features e.
Most children with suspected skeletal dysplasias are referred to a genetics clinic for diagnostic confirmation and genetic counseling. Since about the year , genetic tests for some of the specific disorders have become available.
During an initial medical evaluation of shortness, the absence of disproportion and other clues listed above usually indicates causes other than bone dysplasias.
Dwarfism is usually caused by a genetic variant; achondroplasia is caused by a mutation on chromosome 4. If dwarfism is caused by a medical disorder, the person is referred to by the underlying diagnosed disorder.
Disorders causing dwarfism are often classified by proportionality. Disproportionate dwarfism describes disorders that cause unusual proportions of the body parts, while proportionate dwarfism results in a generally uniform stunting of the body.
Disorders that cause dwarfism may be classified according to one of hundreds of names, which are usually permutations of the following roots:.
Examples include achondroplasia and chondrodystrophy. Many types of dwarfism are currently impossible to prevent because they are genetically caused.
Genetic conditions that cause dwarfism may be identified with genetic testing , by screening for the specific variations that result in the condition.
However, due to the number of causes of dwarfism, it may be impossible to determine definitively if a child will be born with dwarfism.
Dwarfism resulting from malnutrition or a hormonal abnormality may be treated with an appropriate diet or hormonal therapy.
Growth hormone deficiency may be remedied via injections of human growth hormone HGH during early life. Genetic mutations of most forms of dwarfism caused by bone dysplasia cannot be altered yet, so therapeutic interventions are typically aimed at preventing or reducing pain or physical disability, increasing adult height, or mitigating psychosocial stresses and enhancing social adaptation.
Forms of dwarfism associated with the endocrine system may be treated using hormonal therapy. If the cause is prepubescent hyposecretion of growth hormone, supplemental growth hormone may correct the abnormality.
If the receptor for growth hormone is itself affected, the condition may prove harder to treat. Hypothyroidism is another possible cause of dwarfism that can be treated through hormonal therapy.
Injections of thyroid hormone can mitigate the effects of the condition, but lack of proportion may be permanent. Pain and disability may be ameliorated by physical therapy, braces or other orthotic devices, or by surgical procedures.
Dwarfs are sometimes described as short and ugly, although some scholars have questioned whether this is a later development stemming from comical portrayals of the beings.
The modern English noun dwarf descends from the Old English dweorg. Beyond the Proto-Germanic reconstruction, the etymology of the word dwarf is highly contested.
Scholars have proposed theories about the origins of the being by way of historical linguistics and comparative mythology , including that dwarfs may have originated as nature spirits, as beings associated with death, or as a mixture of concepts.
Modern English has two plurals for the word dwarf: Dwarfs remains the most commonly employed plural. The minority plural dwarves was recorded as early as , but it was popularized by the fiction of philologist and author J.
Norse mythology provides different origins for the beings, as recorded in the Poetic Edda compiled in the 13th century from earlier traditional sources and the Prose Edda written by Snorri Sturluson in the 13th century.
The Prose Edda , however, describes dwarfs as beings similar to maggots that festered in the flesh of Ymir before being gifted with reason by the gods.
Very few beings explicitly identifiable as dwarfs appear in the Poetic Edda and Prose Edda , and they have quite diverse roles: After the Christianization of the Germanic peoples , tales of dwarfs continued to be told in the folklore of areas of Europe where Germanic languages were and are spoken.
Dwarfs in folklore are usually described as old men with long beards. This may indicate that the dwarf antagonist is similar to the oppressive supernatural figure the mare which is the etymological source of the word " nightmare ", or possibly that the word had come to be used to mean "fever".
In Middle High German heroic poetry, most dwarfs are portrayed as having long beards, but some may have a childish appearance.
They also possess other magical objects, and often appear as master smiths. He is defeated by Siegfried and afterwards serves the hero.
In Ortnit , Alberich seduces the queen of Lombardy, thereby begetting the hero Ortnit. The dwarf then aids Ortnit in his adventures after revealing to the hero that he is his father.
The hero Dietrich von Bern is portrayed in several adventures involving dwarfs. A similar plot occurs in the fragmentary poem Goldemar. In Virginal , Dietrich rescues the dwarf queen Virginal from a force of invading heathens.
The dwarfs Eggerich and Baldung play a role in aiding Dietrich in the poem Sigenot: