Science / Chemistry / Rare Earth Element: A metallic element that belongs to Group 3B or to the lanthanide series.
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Earth Noun Plural Synonyms: globe, mother earth, planet, world, blue planet, Terra
Earth Noun Synonyms: soil, dirt, loam, sod, clay, turf, ground, mould
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Element Noun Synonyms: environment, atmosphere, situation, locale, territory, sphere, habitat, medium, domain
Element Adjective Synonyms: component, constituent, ingredient, essential, fundamental, part, unit, piece, segment, feature, factor, detail, particular
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Rare Noun Synonyms: fine, good, admirable, excellent, choice, select, special, first-rate, first-class, exquisite, superior, superlative, peerless, unequalled, matchless, incomparable, in a class by itself or herself or himself or themselves, sui generis, outstanding, collec
Rare Adjective Synonyms: uncommon, unfamiliar, unusual, exceptional, out of the ordinary, extraordinary, atypical, scarce, unparalleled, choice, recherch‚, phenomenal, infrequent, few and far between, sparse, scanty, limited, seldom encountered or met with or seen, unique, singul
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Science / Chemistry / Rare Earth: An oxide of a rare earth element. MORE
Science / Chemistry / Infrared Radiation: Electromagnetic radiation with wavelength longer than visible light but shorter than that of microwaves. Infrared radiation is produced by hot objects; absorption of infrared radiation causes chemical MORE
Entertainment / Photography / Infrared Focus: See ir setting. MORE
Science / Chemistry / Infrared Spectroscopy: A technique for determining the structure (and sometimes concentration) of molecules by observing how infrared radiation is absorbed by a sample. MORE
Technology / Cell Phones / Low Earth Orbit: A term used to describe the orbital altitude range (500 to 2000 km above the surface of the Earth) of certain communications satellites. MORE
Science / Chemistry / Main Group Elements: Elements of the s and p blocks. MORE