Rare Earth Definition

What does rare earth mean? definition, meaning and ...

Hyponyms (each of the following is a kind of "rare earth"): terbium metal (a separate group of related lanthanides, including terbium, europium, gadolinium, and sometimes dysprosium) Learn English with...

Rare Earth hypothesis : definition of Rare Earth ...

In planetary astronomy and astrobiology, the Rare Earth hypothesis argues that the emergence of complex multicellular life on Earth required an improbable combination of astrophysical and geological events and circumstances. The term "Rare Earth" comes from Rare Earth: Why Complex Life Is Uncommon in the Universe (2000), a book by Peter Ward, a geologist and paleontologist, and Donald …

Rare-earth element - Wikipedia

A rare-earth element (REE) or rare-earth metal (REM), as defined by IUPAC, is one of a set of seventeen chemical elements in the periodic table, specifically the fifteen lanthanides, as well as scandium and yttrium.

Rare-earth element | Britannica.com

Rare-earth element, any member of the group of chemical elements consisting of three elements in Group 3 (scandium [Sc], yttrium [Y], and lanthanum [La]) and the first extended row of elements below the main body of the periodic table (cerium [Ce] through lutetium [Lu]). The elements cerium through lutetium are called the lanthanides, but many scientists also, though incorrectly, call those ...

Rare earth definition by Babylon's free dictionary

A rare earth element (REE) or rare earth metal (REM), as defined by IUPAC, is one of a set of seventeen chemical elements in the periodic table, specifically the fifteen lanthanides, as well as scandium and yttrium. Scandium and yttrium are considered rare earth elements because they tend to occur in the same ore deposits as the lanthanides and ...

USGS Minerals Information: Rare Earths

The principal economic sources of rare earths are the minerals bastnasite, monazite, and loparite and the lateritic ion-adsorption clays. The rare earths are a relatively abundant group of 17 elements composed of scandium, yttrium, and the lanthanides. The elements range in crustal abundance from ...

A Look at Rare Earth Metals and Their Applications

Rare earth metals are actually not as rare as their name might imply. Critical to high-performance optics and lasers and key to the most powerful magnets and superconductors in the world, rare earths are simply more difficult to mine than most metals and generally don't accumulate into rich ores.

rare earth | Definition of rare earth in English by Oxford ...

'Thulium is a rare earth element, one of the elements found in row 6 of the periodic table.' 'It occurs primarily with the other rare earth elements in two minerals, monazite and bastnasite.'

rare earth | Definition of rare earth in US English by ...

'Dysprosium is one of 15 rare earth elements, a family also known as the lanthanides.' 'It occurs primarily with the other rare earth elements in two minerals, monazite and bastnasite.' 'The effect was predicted to be very weak, but least weak with rare earth and transition metal ions.'

What does rare earth mean? - Definitions.net

Rare Earth is an American rock band affiliated with Motown's Rare Earth record label, who prospered in 1970–1972. Although not the first white band signed to Motown, Rare Earth was the first big hit-making act signed by Motown that consisted only of white members.

Rare earth - definition of rare earth by The Free Dictionary

rare earth n. 1. Any of various oxides of the rare-earth elements. 2. A rare-earth element. [rare (because the minerals from which the rare-earth elements were first isolated are uncommon) + earth, metallic oxide.] rare earth n 1. (Elements & Compounds) any oxide of a lanthanide 2. (Elements & Compounds) Also called: rare-earth element another name for ...

What Are Rare Earths?

What Are Rare Earths? Rare earths are a series of chemical elements found in the Earth's crust that are vital to many modern technologies, including consumer electronics, computers and networks, communications, clean energy, advanced transportation, health care, environmental mitigation, national defense, and many others.

Rare Earth Properties - ThoughtCo

The rare earth metals naturally occur together in minerals (e.g., monazite is a mixed rare earth phosphate). Rare earths are found with non-metals, usually in the 3+ oxidation state. There is little tendency to vary the valence .

rare earth definition | English definition dictionary ...

Search rare earth and thousands of other words in English definition and synonym dictionary from Reverso. You can complete the definition of rare earth given by the English Definition dictionary with other English dictionaries: Wikipedia, Lexilogos, Oxford, Cambridge, Chambers Harrap, Wordreference, Collins Lexibase dictionaries, Merriam Webster...

Rare Earth | Definition of Rare Earth by Merriam-Webster

Rare earth definition is - any of a group of similar oxides of metals or a mixture of such oxides occurring together in widely distributed but relatively scarce minerals. any of a group of similar oxides of metals or a mixture of such oxides occurring together in widely distributed but …

Rare earths - definition of Rare earths by The Free Dictionary

rare earth n. 1. Any of various oxides of the rare-earth elements. 2. A rare-earth element. [rare (because the minerals from which the rare-earth elements were first isolated are uncommon) + earth, metallic oxide.] rare earth n 1. (Elements & Compounds) any oxide of a lanthanide 2. (Elements & Compounds) Also called: rare-earth element another name for ...

Rare-earth metal | Define Rare-earth metal at Dictionary.com

Rare-earth metal definition, any of a group of closely related metallic elements, comprising the lanthanides, scandium, and yttrium, that are chemically similar by virtue of having the same number of valence electrons.

What does rare earth element mean? - definitions.net

Freebase (0.00 / 0 votes) Rate this definition:. Rare earth element. As defined by IUPAC, rare earth elements or rare earth metals are a set of seventeen chemical elements in the periodic table, specifically the fifteen lanthanides plus scandium and yttrium.

Rare earth element : definition of Rare earth element and ...

As defined by IUPAC, rare earth elements ("REEs") or rare earth metals are a set of seventeen chemical elements in the periodic table, specifically the fifteen lanthanides plus scandium and yttrium. [2] Scandium and yttrium are considered rare earth elements since they tend to occur in the same ore deposits as the lanthanides and exhibit similar chemical properties.

rare-earth noun - Definition, pictures, pronunciation and ...

any one of a group of chemical elements that have similar properties and tend to occur together in nature We import all of our rare earths from China. The bones were analysed for their rare earth …

REE - Rare Earth Elements - Metals, Minerals, Mining, Uses

Rare Earth Element Production: This chart shows a history of rare earth element production, in metric tons of rare earth oxide equivalent, between 1950 and 2016. It clearly shows the United States' entry into the market in the mid-1960s when color television exploded demand.

Rare earth metal | definition of Rare earth metal by ...

In addition to its rare earth mine and processing facility at Mountain Pass, California, Molycorp also owns a controlling interest in the Estonia-based Molycorp Silmet AS, which has a production capacity of 3,000 metric tons of rare earth products and 700 metric tons of rare metal products annually and is one of the largest rare metal and rare ...

Rare Earth Element | Definition of Rare Earth Element by ...

Rare earth element definition is - any of a series of metallic elements of which the oxides are classed as rare earths and which include the elements of the lanthanide series and sometimes yttrium and scandium —called also rare earth metal.

Rare Earth Elements

Rare Element Resources Ltd. is a publicly traded mineral resource company focused on exploration and development of rare-earth element deposits that carry a favorable distribution of critical rare earths.

What are 'rare earths' used for? - BBC News

Image caption Rare earth elements are chemically similar and are sometimes used in similar ways "Rare earths" are a group of 17 chemically similar elements crucial to the manufacture of many hi ...

Rare-earth magnet - Wikipedia

Rare-earth magnets are strong permanent magnets made from alloys of rare-earth elements. Developed in the 1970s and 1980s, rare-earth magnets are the strongest type of permanent magnets made, producing significantly stronger magnetic fields than other types such as ferrite or alnico magnets.

rare earth Definition in the Cambridge English Dictionary

rare earth meaning: one of a group of metal chemical elements that are difficult to find in large quantities, and are important for technology and manufacturing: . Learn more.

rare earth (noun) definition and synonyms | Macmillan ...

90% of the time, speakers of English use just 7,500 words in speech and writing. These words appear in red, and are graded with stars. One-star words are frequent, two-star words are more frequent, and three-star words are the most frequent.