protium


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pro·ti·um

 (prō′tē-əm, prō′shē-)
n.
The most abundant isotope of hydrogen, H-1, having one proton and no neutrons in the nucleus.
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.

protium

(ˈprəʊtɪəm)
n
(Elements & Compounds) the most common isotope of hydrogen, having a mass number of 1
[C20: New Latin, from proto- + -ium]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014

pro•ti•um

(ˈproʊ ti əm, -ʃi əm)

n.
the lightest and most common isotope of hydrogen.
[1930–35; < Greek prôt(os) first + -ium2]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.

pro·ti·um

(prō′tē-əm, prō′shē-əm)
The most abundant isotope of hydrogen, having an atomic mass of 1. Its nucleus consists of a single proton. See more at hydrogen.
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.Protium - genus of chiefly tropical American trees having fragrant wood and yielding gum elemi
rosid dicot genus - a genus of dicotyledonous plants
Burseraceae, family Burseraceae, torchwood family - resinous or aromatic chiefly tropical shrubs or trees
Protium heptaphyllum - tropical American tree
Protium guianense - tropical American tree
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
Translations
Protium
procio
protium
References in periodicals archive ?
Similarly, most species in genera such as Mikania (Asteraceae), Inga (Fabaceae), Ficus (Moraceae), Eugenia (Myrtaceae), Neea (Nyctaginaceae), Pouteria (Sapotaceae), and Smilax (Smilacaceae) had galls, as did all species of Protium (Burseraceae), Paullinia (Sapindaceae), and Vochysia (Vochysiaceae).
insignis (Tavares), associated with abandoned galls of Protium heptaphyllum (Aubl.) Marchand (Burseraceae); M.
The results of ultimate analysis of the oil shale sample showed that the contents of nitrogen, carbon and protium were 0.86%, 58.62% and 5.59%, respectively, indicating that the organic matter in it was abundant.
Despite all the difficulties of the implementation of controlled thermonuclear synthesis (CTS) of light chemical elements (for example, such hydrogen 1 [sup.1]H (protium) isotopes as deuterium D - 1.
The proton-to-electron mass ratio is approximately 1836, so that the mass contribution of the proton to normal matter is very high, for example in the hydrogen atom (protium) it is 1 - 1/1836 = 99.95 percent.
1, 2, 3 Schefflera morototoni (Aubl.) Maguire 1, 2, 3, 4 Protium heptaphyllum (Aubl.) Marchand 1, 2, 3, 4 Rhamnidium elaeocarpum Reissek 1, 2, 3 Bauhinia forficata Link 1, 2, 3 Inga edulis Mart.
When protium (H) is completely replaced by deuterium (D), the 2-3-fold kinetic isotope effect is well known [5].