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definition rare free

1 Orphan Drugs - FDA

demonstrate promise for the diagnosis and/or treatment of rare diseases or conditions. Orphan Drug Definition An orphan drug is defined in the 1984 amendments of the U.S.

Rare disease | definition of rare disease by Medical ...

Rare Disease Day is an annual event that will be celebrated worldwide February 28 and was created to raise awareness and build an understanding of rare diseases, which effects individuals such as Levi Krystosek, age 12, of Ocean Springs. Using an analysis based on a cohort of 258,235 patients diagnosed with a rare disease during 2017/2018, it ...

How Is Treason Defined in the Constitution? What Are the ...

Treason is a rare but very serious crime. Learn what it's about and understand terms like "levying war" and "adhering to the enemy." Treason is "the highest of all crimes"—defined as intentionally betraying one's allegiance by levying war against the government or giving aid or comfort to its enemies.

RARE | meaning in the Cambridge English Dictionary

rare definition: 1. not common or frequent; very unusual: 2. (of meat) not cooked for very long and still red: 3…. Learn more.

Obscure | Definition of Obscure by Merriam-Webster

Obscure definition is - not well-known : not known to most people. See more meanings of obscure. How to use obscure in a sentence. Synonym Discussion of obscure.

Rare - definition of Rare - Free Dictionary

rare adj 1: not widely known; especially valued for its uncommonness; "a rare word"; "rare books" 2: recurring only at long intervals; "a rare appearance"; "total eclipses are rare events" 3: not widely distributed; "rare herbs"; "rare patches of green in the desert" 4: having low density; "rare gasses"; "lightheaded from the rarefied mountain air" [syn: rare, rarefied, rarified] 5: marked by ...

Rare Synonyms, Rare Antonyms | Merriam-Webster Thesaurus

50 synonyms of rare from the Merriam-Webster Thesaurus, plus 95 related words, definitions, and antonyms. Find another word for rare. Rare: being out of the ordinary.

Rare-earth screen | definition of rare-earth screen by ...

rare-earth screen: an intensifying screen (6) made of a rare-earth oxide phosphor, more efficient than calcium tungstate, especially at the higher kilovoltages used in modern radiography.

WHO | Definitions

•Rare • Very rare • >= 1/10 • > = 1/100 and < 1/10 • >= 1/1000 and < 1/100 • >= 1/10000 and < 1/1000 • < 1/10000. 11 Certain • Event or laboratory test abnormality, with plausible time relationship to drug intake – Cannot be explained by disease or other drugs


Rare diseases include genetic diseases, rare cancers, infectious tropical diseases and degenerative diseases. 80% of rare diseases are genetic in origin and hence disproportionately impact children. There is no universally accepted definition of a rare disease. Different countries define rare …

Friendship Dynamics | What Is The Real Definition Of A ...

The definition of a true friendship is someone who has your back, no matter what. They watch out for you and ensure you are not in danger. They watch out for you and ensure you are not in danger. They will never purposely lead you into making decisions that aren't good for you.


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Definition.org | Best Online Dictionary and Reference Site

Definition.org is a leading online dictionary for word definitions, synonyms, translations, pronunciation, and word of the day. Find the most accurate definition for your word search in our easy-to-use dictionary and thesaurus platform.

Risk-Free Rate of Return Definition - Investopedia

Risk-Free Rate Of Return: The risk-free rate of return is the theoretical rate of return of an investment with zero risk. The risk-free rate represents the interest an investor would expect from ...

Rare in Spanish | English to Spanish Translation - SpanishDict

Translate Rare. See 6 authoritative translations of Rare in Spanish with example sentences, phrases and audio pronunciations.

Rare Metal | Article about Rare Metal by The Free Dictionary

Rare Metal. a conventional name for any one of the more than 50 metals shown in Table 1. These metals are either relatively new to technology or else have so far received only limited application. The scale of production and fields of application of these metals are continuing to expand. The term "rare metals" came into use in the USSR in ...

Wallpapers HD - Backgrounds 4K - Apps on Google Play

Download Free HD Background Images. Rare Walls offers free high definition wallpapers for Android. First of all, with a resolution of 1080x1920 (Full HD) and 720x1280 (HD), and also 1440x2560 (QHD). You can set images as a screensaver or lock screen for free. Wallpaper is suitable for any brands of phones such as Samsung, Xiaomi, Huawei and others.

HD Wallpapers | Ultra HD 4K Wallpapers for Desktop & Mobiles

Download best HD, 4K Wallpapers for desktop, mobiles, tablets in high quality HD, 1920x1080 Full HD, 4K Ultra UHD, 5K, 8K SUHD popular resolutions.

RARE Synonyms: 103 Synonyms & Antonyms for RARE ...

Find 103 ways to say RARE, along with antonyms, related words, and example sentences at Thesaurus.com, the world's most trusted free thesaurus.

Rarity Definition & Meaning | Dictionary.com

Rarity definition, something rare, unusual, or uncommon: Snowstorms are a rarity in the South. See more.

Scale-free networks are rare | Nature Communications

Across these networks, we find robust evidence that strongly scale-free structure is empirically rare, while for most networks, log-normal distributions …

In rare form - Idioms by The Free Dictionary

in rare form 1. In an extreme or otherwise remarkable manner, as of one's behavior. Boy, the kids are in rare form today—how much sugar did you give them? Patty always seems so timid, but she was in rare form in the meeting and deftly answered all of the board members' questions. 2. Doing something extremely well. That comedian was really in rare form ...

Rare Definition & Meaning | Dictionary.com

Rare definition, coming or occurring far apart in time; unusual; uncommon: a rare disease;His visits are rare occasions. See more.

Growth hormone deficiency | Genetic and Rare Diseases ...

Growth hormone deficiency (GHD) is characterized by abnormally short height due to lack (or shortage) of growth hormone.. It can be congenital (present at birth) or acquired. Most cases are identified in children. Although it is uncommon, growth hormone deficiency may also be diagnosed in adults. Too little growth hormone can cause short stature in children, and changes in muscle mass ...

Rare financial definition of Rare

Rare. Describing a coin that is extremely difficult to find. Depending on its quality, a rare coin may be quite valuable, depending on demand from collectors and investors. However, a rare coin may be a highly illiquid asset. See also: Numismatics.

Short Bowel Syndrome | NIDDK

Short bowel syndrome is a group of problems related to poor absorption of nutrients. Short bowel syndrome typically occurs in people who have. had at least half of their small intestine removed and sometimes all or part of their large intestine removed. significant damage of the small intestine. poor motility, or movement, inside the intestines.

FAQs About Rare Diseases | Genetic and Rare Diseases ...

The rare disease definition was needed to establish which conditions would qualify for the new incentive programs. Other countries have their own official definitions of a rare disease. In the European Union, a disease is defined as rare when it affects fewer than 1 in 2,000 people.

Rare species - Wikipedia

A rare species is a group of organisms that are very uncommon, scarce, or infrequently encountered. This designation may be applied to either a plant or animal taxon, and is distinct from the term endangered or threatened. Designation of a rare species may be made by an official body, such as a national government, state, or province.

Definition of a free good - Economics Help

Definition of free good - a good with zero opportunity cost. Consumption has no opportunity cost. Several examples, water, air, internet, knowledge. When free goods can start to become normal economic goods.

List of Rare Disease Information - NORD (National ...

Rare Disease Database. Enhancements to NORD's Rare Disease Database and website were made possible through a grant from the Anthem Foundation, the charitable arm of Anthem, Inc.. NORD's Rare Disease Database provides brief introductions for patients and caregivers to specific rare diseases.

Rare-earth element - Wikipedia

The rare-earth elements, also called the rare-earth metals or (in context) rare-earth oxides, or the lanthanides (though yttrium and scandium are usually included as rare-earths) are a set of 17 nearly-indistinguishable lustrous silvery-white soft heavy metals. Scandium and yttrium are considered rare-earth elements because they tend to occur in the same ore deposits as the lanthanides and ...

What are rare earth elements, and why are they important ...

U.S. Geological Survey news release "Going Critical" The rare earth elements (REE) are a set of seventeen metallic elements. These include the fifteen lanthanides on the periodic table plus scandium and yttrium. Rare earth elements are an essential part of many high-tech devices. The U.S.

Rare - definition of rare by The Free Dictionary

Rare birds, retaining their most brilliant plumage, enormous fish, spread upon massive silver dishes, together with every wine produced in the Archipelago, Asia Minor, or the Cape, sparkling in bottles, whose grotesque shape seemed to give an additional flavor to the draught, -- all these, like one of the displays with which Apicius of old gratified his guests, passed in review before the eyes ...