Isotopic is an adjective that refers to the existence of two or more atoms of a given element with different numbers of neutrons in their nuclei. Some synonyms for the word isotopic include isotopicity, isotope variation, isotopic diversity, isotopic composition, isotopic heterogeneity, and isotopic difference. These terms are often used in chemistry and geology to describe the diverse isotopic compositions of various elements found in nature. By studying isotopic variations in different materials, scientists can learn more about the age, origin, and history of rocks, soils, and living organisms. The use of isotopic synonyms helps to accurately describe the nuances of isotopic measurements and analyses.