thulium


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thu·li·um

 (tho͞o′lē-əm)
n. Symbol Tm
A bright, soft, silvery, metallic element of the lanthanide series obtained commercially from the mineral monazite, having an x-ray emitting isotope that is used in portable medical x-ray units. Atomic number 69; atomic weight 168.934; melting point 1,545°C; boiling point 1,950°C; specific gravity 9.321 (at 25°C); valence 2, 3. See Periodic Table.

[After Thule1.]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

thulium

(ˈθjuːlɪəm)
n
(Elements & Compounds) a malleable ductile silvery-grey element occurring principally in monazite. The radioisotope thulium-170 is used as an electron source in portable X-ray units. Symbol: Tm; atomic no: 69; atomic wt: 168.93421; valency: 3; relative density: 9.321; melting pt: 1545°C; boiling pt: 1950°C
[C19: New Latin, from Thule + -ium]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014

thu•li•um

(ˈθu li əm)

n.
a rare-earth metallic element found in gadolinite and other uncommon minerals. Symbol: Tm; at. wt.: 168.934; at. no.: 69; sp. gr.: 9.32.
[< French (1879), after Thule, taken as a name for ancient Scandinavia; see -ium2]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.

thu·li·um

(tho͞o′lē-əm)
Symbol Tm A soft, easily shaped, silver-gray metallic element of the lanthanide series. An artificial radioactive isotope of thulium is used as a radiation source in small, portable x-ray machines. Atomic number 69. See Periodic Table.
The American Heritage® Student Science Dictionary, Second Edition. Copyright © 2014 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.thulium - a soft silvery metallic element of the rare earth groupthulium - a soft silvery metallic element of the rare earth group; isotope 170 emits X-rays and is used in small portable X-ray machines; it occurs in monazite and apatite and xenotime
metal, metallic element - any of several chemical elements that are usually shiny solids that conduct heat or electricity and can be formed into sheets etc.
apatite - a common complex mineral consisting of calcium fluoride phosphate or calcium chloride phosphate; a source of phosphorus
monazite - a reddish-brown mineral containing rare earth metals; an important source of thorium and cerium
xenotime - a brown-to-yellow mineral that is a phosphate of yttrium in crystalline form
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
Translations
тулий
thulium
thulium
tulio
tuulium
tulium
thulium
תוליום
tulij
túlium
túlín
ツリウム
thulium
tulis
thulium
thulium
tul
túlio
tuliu
thulium
tulij
tulium
tulyum
tuli

thulium

[ˈθjuːlɪəm] Ntulio m
Collins Spanish Dictionary - Complete and Unabridged 8th Edition 2005 © William Collins Sons & Co. Ltd. 1971, 1988 © HarperCollins Publishers 1992, 1993, 1996, 1997, 2000, 2003, 2005

thulium

n (Chem) → Thulium nt
Collins German Dictionary – Complete and Unabridged 7th Edition 2005. © William Collins Sons & Co. Ltd. 1980 © HarperCollins Publishers 1991, 1997, 1999, 2004, 2005, 2007
References in periodicals archive ?
Goldman, MD, enrolled 20 subjects with at least moderate photoaging who randomly received three treatments with either the 1,064/ 532-nm fractionated picosecond Nd:YAG laser or with the 1,927-nm fractionated thulium fiber laser on each side of the face, 4 weeks apart.
It consists of yttrium and the 15 lanthanide elements - lanthanum, cerium, praseodymium, neodymium, promethium, samarium, europium, gadolinium, terbium, dysprosium, holmium, erbium, thulium, ytterbium and lutetium.
Two [micro]m CW laser is also known as thulium laser, which has a wavelength of 2013 nm and a penetration depth in tissue of 0.3 mm.
Comparison of holmium:YAG and thulium fiber laser lithotripsy: ablation thresholds, ablation rates, and retropulsion effects.
He indicates that currently thulium fiber lasers in the 1.5-2 [micro]m range are best for the processing of transparent welding.
For instance, cerium, which is part of the REs, is the 25th most abundant element of the 78 common elements in the earth's crust (-60 ppm) with the elements thulium and lutetium being the least abundant REs (~0.5 ppm) but are still more plentiful than the precious metals such as gold and platinum [1].
Caption: Figure 3: (a) Absorption spectra of ASA in different concentrations of thulium (III); (b) molar ratio of thulium(III)-arsenazo III complex at [lambda] = 605 nm (pH 7.40).
Murray, "High-power thulium fiber laser ablation of urinary tissues at 1.94 [micro]m," Journal of Endourology, vol.
Following salts of lanthanides were used as standards: Samarium (III) chloride hexahydrate, Lanthanum (III) nitrate hexahydrate, Europium (III) nitrate hexahydrate, Terbium (III) nitrate hexahydrate, Holmium(III) nitrate hydrate, Thulium (III) nitrate hexahydrate, Lutetium (III) nitrate hexahydrate, Erbium (III) nitrate hexahydrate, Samarium (III) nitrate hexahydrate, Neodymium (III) nitrate hexahydrate, Gadolinium (III) nitrate hexahydrate, Dysprosium (III) nitrate pentahydrate, Ytterbium (III) nitrate pentahydrate, and Cerium (III) nitrate hexahydrate.
Motalov, "Thermodynamic properties of neutral and charged species in high-temperature vapour over terbium and thulium trichlorides," High Temperatures-High Pressures, vol.
More recently, optimal keratoplasty (Opti-K, NTK Enterprises, Inc.) has been proposed as a new office-based laser vision correction procedure performed with a continuous-wave thulium fiber laser that reshapes the cornea to temporarily improve the symptoms of presbyopia and correct low to moderate hyperopia similarly to LTK.
We previously obtained [pH.sub.e] maps in glioma-bearing rats with biosensor imaging of redundant deviation in shifts (BIRDS) using lanthanide agents, for example, thulium 1, 4, 7, 10-tetraazacyclododecane-1, 4, 7, 10-tetrakis(methylene phosphonate), [TmDOTP.sup.5-] [57, 58].