strontium

[ stron-shee-uhm, -shuhm, -tee-uhm ]

/ ˈstrɒn ʃi əm, -ʃəm, -ti əm /

noun Chemistry.

a bivalent, metallic element whose compounds resemble those of calcium, found in nature only in the combined state, as in strontianite: used in fireworks, flares, and tracer bullets. Symbol: Sr; atomic weight: 87.62; atomic number: 38; specific gravity: 2.6.

Origin of strontium

First recorded in 1800–10; stront(ia) + -ium

OTHER WORDS FROM strontium

stron·tic

[stron-tik], /ˈstrɒn tɪk/, adjective

Words nearby strontium

strongyloidiasis, strongylosis, strontia, strontian, strontianite, strontium, strontium 90, strontium hydroxide, strontium monoxide, strontium unit, strook

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

Example sentences from the Web for strontium

Strontium obtained from carbonate of strontia by Sir Humphry Davy.
The Evolution of Photography |John Werge
Like strontium, it closely resembles calcium both in the properties of the metal and in the compounds which it forms.
An Elementary Study of Chemistry|William McPherson
The substance becomes reduced to sulphide of barium and sulphide of strontium, when it should be dissolved in hydrochloric acid.
A System of Instruction in the Practical Use of the Blowpipe|Anonymous
In this last case it may be examined for barium and strontium, the former of which will rarely be present.
A Textbook of Assaying: For the Use of Those Connected with Mines.|Cornelius Beringer and John Jacob Beringer

Ammonium carbonate is added to the filtrate; this precipitates calcium, strontium and 63 barium.
Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 1|Various

British Dictionary definitions for strontium

strontium

/ (ˈstrɒntɪəm) /

noun

a soft silvery-white element of the alkaline earth group of metals, occurring chiefly in celestite and strontianite. Its compounds burn with a crimson flame and are used in fireworks. The radioisotope strontium-90, with a half-life of 28.1 years, is used in nuclear power sources and is a hazardous nuclear fall-out product. Symbol: Sr; atomic no: 38; atomic wt: 87.62; valency: 2; relative density: 2.54; melting pt: 769°C; boiling pt: 1384°C

Word Origin for strontium

C19: from New Latin, from strontian

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 strontium

strontium

[ strŏn′chē-əm, -tē-əm, -shəm ]

n. Symbol Sr

A soft, easily oxidized metallic element that ignites spontaneously in air when finely divided, used in pharmaceuticals and in radioisotope form for bone imaging. Atomic number 38.

Scientific definitions for strontium

strontium

[ strŏn′chē-əm, -tē-əm ]

Sr

A soft, silvery metallic element of the alkaline-earth group that occurs naturally only as a sulfate or carbonate. One of its isotopes is used in the radiometric dating of rocks. Because strontium salts burn with a red flame, they are used to make fireworks and signal flares. Atomic number 38; atomic weight 87.62; melting point 777°C; boiling point 1,382°C; specific gravity 2.54; valence 2. See Periodic Table.

单词	strontium
释义	strontium [ stron-shee-uhm, -shuhm, -tee-uhm ] / ˈstrɒn ʃi əm, -ʃəm, -ti əm / noun Chemistry. a bivalent, metallic element whose compounds resemble those of calcium, found in nature only in the combined state, as in strontianite: used in fireworks, flares, and tracer bullets. Symbol: Sr; atomic weight: 87.62; atomic number: 38; specific gravity: 2.6. Origin of strontium First recorded in 1800–10; stront(ia) + -ium OTHER WORDS FROM strontium stron·tic [stron-tik], /ˈstrɒn tɪk/, adjective Words nearby strontium strongyloidiasis, strongylosis, strontia, strontian, strontianite, strontium, strontium 90, strontium hydroxide, strontium monoxide, strontium unit, strook Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020 Example sentences from the Web for strontium Strontium obtained from carbonate of strontia by Sir Humphry Davy. The Evolution of Photography \|John Werge Like strontium, it closely resembles calcium both in the properties of the metal and in the compounds which it forms. An Elementary Study of Chemistry\|William McPherson The substance becomes reduced to sulphide of barium and sulphide of strontium, when it should be dissolved in hydrochloric acid. A System of Instruction in the Practical Use of the Blowpipe\|Anonymous In this last case it may be examined for barium and strontium, the former of which will rarely be present. A Textbook of Assaying: For the Use of Those Connected with Mines.\|Cornelius Beringer and John Jacob Beringer Ammonium carbonate is added to the filtrate; this precipitates calcium, strontium and 63 barium. Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 1\|Various British Dictionary definitions for strontium strontium / (ˈstrɒntɪəm) / noun a soft silvery-white element of the alkaline earth group of metals, occurring chiefly in celestite and strontianite. Its compounds burn with a crimson flame and are used in fireworks. The radioisotope strontium-90, with a half-life of 28.1 years, is used in nuclear power sources and is a hazardous nuclear fall-out product. Symbol: Sr; atomic no: 38; atomic wt: 87.62; valency: 2; relative density: 2.54; melting pt: 769°C; boiling pt: 1384°C Word Origin for strontium C19: from New Latin, from strontian 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 strontium strontium [ strŏn′chē-əm, -tē-əm, -shəm ] n. Symbol Sr A soft, easily oxidized metallic element that ignites spontaneously in air when finely divided, used in pharmaceuticals and in radioisotope form for bone imaging. Atomic number 38. The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company. Scientific definitions for strontium strontium [ strŏn′chē-əm, -tē-əm ] Sr A soft, silvery metallic element of the alkaline-earth group that occurs naturally only as a sulfate or carbonate. One of its isotopes is used in the radiometric dating of rocks. Because strontium salts burn with a red flame, they are used to make fireworks and signal flares. Atomic number 38; atomic weight 87.62; melting point 777°C; boiling point 1,382°C; specific gravity 2.54; valence 2. See Periodic Table. The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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