cerium

[ seer-ee-uhm ]

/ ˈsɪər i əm /

noun

a steel-gray, ductile metallic element of the rare-earth group found only in combination. Symbol: Ce; atomic weight: 140.12; atomic number: 58.

Origin of cerium

First recorded in 1795–1805; Cer(es) + -ium

Words nearby cerium

ceric oxide, ceriferous, ceriman, cerinic acid, cerise, cerium, cerium metal, cerium metals, Cerlox, cermet, CERN

Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Example sentences from the Web for cerium

Not to mention rare elements such as lanthanum, cerium, and neodymium, essential to modern technology and commanding high prices.
Afghanistan’s Mineral Wealth Could Be a Bonanza—or Lead to Disaster|Dr. Cheryl Benard|July 4, 2012|DAILY BEAST
Nitrates of cerium have been described, as have also phosphates, carbonates and a carbide.
Encyclopaedia Britannica, 11th Edition, Volume 5, Slice 7|Various
Cerium is detected by giving with borax a bead which is yellow in the oxidising, and colourless in the reducing flame.
A Textbook of Assaying: For the Use of Those Connected with Mines.|Cornelius Beringer and John Jacob Beringer
After that came a lot of experimenting—covering the wire with oxide of cerium and a number of other things.
Historic Inventions|Rupert S. Holland

The manufacturers give away a pound of cerium salts with every purchase of a hundred pounds of thorium salts.
Creative Chemistry|Edwin E. Slosson
This element, in the researches of an associate, Mr. Ludwig Haitinger, proved to be cerium in minute quantity.
Inventors at Work|George Iles

British Dictionary definitions for cerium

cerium

/ (ˈsɪərɪəm) /

noun

a malleable ductile steel-grey element of the lanthanide series of metals, used in lighter flints and as a reducing agent in metallurgy. Symbol: Ce; atomic no: 58; atomic wt: 140.115; valency: 3 or 4; relative density: 6.770; melting pt: 798°C; boiling pt: 3443°C

Word Origin for cerium

C19: New Latin, from Ceres (the asteroid) + -ium

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Medical definitions for cerium

cerium

[ sîr′ē-əm ]

n. Symbol Ce

A lustrous, malleable metallic rare-earth element that occurs chiefly in the minerals monazite and bastnaesite, exists in four allotropic states, and is used in lighter flint alloys. Atomic number 58.

Scientific definitions for cerium

cerium

[ sîr′ē-əm ]

Ce

A shiny, gray metallic element of the lanthanide series. It is ductile and malleable and is used in electronic components, alloys, and lighter flints. It is also used in glass polishing, as a catalyst in self-cleaning ovens, and in various nuclear applications. Atomic number 58; atomic weight 140.12; melting point 795°C; boiling point 3,468°C; specific gravity 6.67 to 8.23; valence 3, 4. See Periodic Table.

单词	cerium
释义	cerium [ seer-ee-uhm ] / ˈsɪər i əm / noun a steel-gray, ductile metallic element of the rare-earth group found only in combination. Symbol: Ce; atomic weight: 140.12; atomic number: 58. Origin of cerium First recorded in 1795–1805; Cer(es) + -ium Words nearby cerium ceric oxide, ceriferous, ceriman, cerinic acid, cerise, cerium, cerium metal, cerium metals, Cerlox, cermet, CERN Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020 Example sentences from the Web for cerium Not to mention rare elements such as lanthanum, cerium, and neodymium, essential to modern technology and commanding high prices. Afghanistan’s Mineral Wealth Could Be a Bonanza—or Lead to Disaster\|Dr. Cheryl Benard\|July 4, 2012\|DAILY BEAST Nitrates of cerium have been described, as have also phosphates, carbonates and a carbide. Encyclopaedia Britannica, 11th Edition, Volume 5, Slice 7\|Various Cerium is detected by giving with borax a bead which is yellow in the oxidising, and colourless in the reducing flame. A Textbook of Assaying: For the Use of Those Connected with Mines.\|Cornelius Beringer and John Jacob Beringer After that came a lot of experimenting—covering the wire with oxide of cerium and a number of other things. Historic Inventions\|Rupert S. Holland The manufacturers give away a pound of cerium salts with every purchase of a hundred pounds of thorium salts. Creative Chemistry\|Edwin E. Slosson This element, in the researches of an associate, Mr. Ludwig Haitinger, proved to be cerium in minute quantity. Inventors at Work\|George Iles British Dictionary definitions for cerium cerium / (ˈsɪərɪəm) / noun a malleable ductile steel-grey element of the lanthanide series of metals, used in lighter flints and as a reducing agent in metallurgy. Symbol: Ce; atomic no: 58; atomic wt: 140.115; valency: 3 or 4; relative density: 6.770; melting pt: 798°C; boiling pt: 3443°C Word Origin for cerium C19: New Latin, from Ceres (the asteroid) + -ium Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012 Medical definitions for cerium cerium [ sîr′ē-əm ] n. Symbol Ce A lustrous, malleable metallic rare-earth element that occurs chiefly in the minerals monazite and bastnaesite, exists in four allotropic states, and is used in lighter flint alloys. Atomic number 58. The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company. Scientific definitions for cerium cerium [ sîr′ē-əm ] Ce A shiny, gray metallic element of the lanthanide series. It is ductile and malleable and is used in electronic components, alloys, and lighter flints. It is also used in glass polishing, as a catalyst in self-cleaning ovens, and in various nuclear applications. Atomic number 58; atomic weight 140.12; melting point 795°C; boiling point 3,468°C; specific gravity 6.67 to 8.23; valence 3, 4. See Periodic Table. The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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