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One of two or more atoms having the same atomic number but different mass numbers.

[iso- + Greek topos, place (so called because the isotopes of a chemical element occupy the same position in the periodic table of elements).]

i′so·top′ic (-tŏp′ĭk) adj.
i′so·top′i·cal·ly adv.
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.
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Adj.1.isotopic - of or relating to or having the relation of an isotope
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References in periodicals archive ?
Rae, "Boron and magnesium isotopic composition of seawater," Geochemistry, Geophysics, Geosystems, vol.
Because the C and O isotopic composition of pedogenic carbonate reflects the isotopic composition of fluid that it precipitated from the time of their formation (e.g., [5, 6]), pedogenic carbonates have been widely used for reconstructing past environmental conditions.
worked with the International Atomic Energy Agency to develop a suite of three natural gas standards for molecular and stable isotopic analyses.
The use of these different raw materials influences not only final chemical compositions of the resulting glass [1], but also the oxygen isotopic compositions.
[C.sub.3] plant species typically have an isotopic ([delta][sup.13]C) range of values between -25[per thousand] and -35[per thousand] with an average around -27 [+ or -] 2[per thousand]; that is, in every 1,000 atoms there are 27 fewer [sup.13]C atoms than in the international standard Vienna Pee Dee Belemnite (VPDB).
The dietary effects on nutrient assimilation, isotopic turnover rates, and discrimination factors were assessed using exponential models.
Sector Field Mass Spectrometry for Elemental and Isotopic Analysis
This author investigated the oxygen and hydrogen isotopic compositions of emeralds from the Ianapera deposit at Madagascar.
INTRODUCTION: The term Wolf's isotopic response refers to the occurrence of a new skin disorder at the site of another, unrelated and already healed skin disease.
The deposition of carbonaceous sediment in these periods is also suggested by the secular variation in the stable carbon isotopic record (i.e., [sup.13]C/[sup.12]C ratio) of sedimentary carbonate and organic matter, which primarily reflects the ratio of the dissolved C[O.sub.2] in the surface ocean.
However, correspondence with Pakistan Atomic Energy Commission (PAEC) is also going on for isotopic analysis of the lake,' GBDMA official added.