Adjective
anisotopic (not comparable)
- (mathematics) Lacking isotopy
- an anisotopic distribution
- (physical chemistry, of an element) Having only one isotope
1973, Ronald C. Denney, A Dictionary of Spectroscopy, →ISBN, page 4:Fluorine is a typical anisotopic element and mass spectra of molecules containing fluorine atoms are more simple than are those of corresponding chlorine and bromine compounds.