American Heritage® Dictionary of the English Language, Fourth Edition
- n. A soft, bright, silvery rare-earth element occurring in two allotropic forms and used as an x-ray source for portable irradiation devices, in some laser materials, and in some special alloys. Atomic number 70; atomic weight 173.04; melting point 824°C; boiling point 1,196°C; specific gravity 6.972 or 6.54 (25°C) depending on allotropic form; valence 2, 3. See Table at element.
Century Dictionary and Cyclopedia
- n. In making the ‘glowers’ or filaments for the Nernst incandescent electric lamps it has been found that the mixture of zirconia with the earths of the yttria group gives the most satisfactory results when the latter contain a large proportion of ytterbium as compared with yttrium.
- n. Chemical symbol, Yb; atomic weight, 173 (?). An element discovered by Marignac in gadolinite, in regard to which little is known. The spectrum of this metal is believed to be peculiar, and to justify its claim to be recognized as a distinct element.
- n. A metallic chemical element (symbol Yb) with an atomic number of 70.
GNU Webster's 1913
- n. (Chem.) A rare element of the boron group, sometimes associated with yttrium or other related elements, as in euxenite and gadolinite. Symbol Yb; provisional atomic weight 173.2. Cf. yttrium.
- n. a soft silvery metallic element; a rare earth of the lanthanide series; it occurs in gadolinite and monazite and xenotime
- Named for the Swedish town of Ytterby. (Wiktionary)
- After Ytterby, a town in Sweden. (American Heritage® Dictionary of the English Language, Fourth Edition)
“Physicists from the university's Centre for Cold Matter studied electrons inside molecules called ytterbium fluoride.”
“The drops haven't been across the board, and europium and ytterbium prices remain high, he said.”
“A team in the US has built a teleporter capable of sending the state of ytterbium ions from one side of the lab to the other; something that until now had only been possible with photons.”
“The gap represents the proper location of the first row of the inner transition metals — that is, lanthanum, La, which is element number 57, through ytterbium, Yb, which is element 70.”
“A capital gain, like that in the ytterbium mine stock, reflects no current change in real economic activity.”
“Every chip manufacturer suddenly wants ytterbium, doubling the demand and doubling the price.”
“Maybe someone was short ytterbium-producer stocks, but that's matched by whoever was long in them.”
“Now my ytterbium mine is worth $200M, for a $100M capital gain.”
“Is it plausible to treat the rise in housing prices as comparable to the appreciation of ytterbium as a result of technological discovery? eddie offers this cogent aside:”
“So this is the real-estate-market analogue to George's suddenly-appreciating ytterbium mine: improvements in the quality of life of the community increase the value of assets.”
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