Dictionary.com
definitions
  • synonyms

samarium

[suh-mair-ee-uh m]
See more synonyms on Thesaurus.com
noun Chemistry.
  1. a rare-earth metallic element discovered in samarskite. Symbol: Sm; atomic weight: 150.35; atomic number: 62; specific gravity: 7.49.
Show More

Origin of samarium

From New Latin, dating back to 1875–80; see origin at samarskite, -ium
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for samarium

Historical Examples

  • Certain absorption bands at the blue end of the spectrum are supposed to be due to rare elements such as samarium.

    Encyclopaedia Britannica, 11th Edition, Volume 8, Slice 4

    Various


British Dictionary definitions for samarium

samarium

noun
  1. a silvery metallic element of the lanthanide series occurring chiefly in monazite and bastnaesite and used in carbon-arc lighting, as a doping agent in laser crystals, and as a neutron-absorber. Symbol: Sm; atomic no: 62; atomic wt: 150.36; valency: 2 or 3; relative density: 7.520; melting pt: 1074°C; boiling pt: 1794°C
Show More

Word Origin

C19: New Latin, from samarskite + -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

samarium in Medicine

samarium

(sə-mârē-əm, -măr-)
n. Symbol Sm
  1. A metallic rare-earth element used in alloys, in infrared absorbing glass, and as a neutron absorber in certain nuclear reactors. Atomic number 62.
Show More
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

samarium in Science

samarium

[sə-mârē-əm]
Sm
  1. A silvery-white metallic element of the lanthanide series that exists in several forms and has seven naturally occurring isotopes. It is used to make glass that absorbs infrared light and to absorb neutrons in the fuel rods of nuclear reactors. Atomic number 62; atomic weight 150.36; melting point 1,072°C; boiling point 1,791°C; specific gravity approximately 7.50; valence 2, 3. See Periodic Table.
Show More
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.