Hello, you have come here looking for the meaning of the word observationally stable. In DICTIOUS you will not only get to know all the dictionary meanings for the word observationally stable, but we will also tell you about its etymology, its characteristics and you will know how to say observationally stable in singular and plural. Everything you need to know about the word observationally stable you have here. The definition of the word observationally stable will help you to be more precise and correct when speaking or writing your texts. Knowing the definition ofobservationally stable, as well as those of other words, enriches your vocabulary and provides you with more and better linguistic resources.
English
Bismuth-209 was observationally stable; but it was found to decay, albeit so slowly that it is for all practical purposes stable. No element beyond bismuth has a known stable isotope.
Of a nuclide (isotope): theoretically capable of radioactive decay (on the grounds that it would be energy-profitable), but not having been observed to do so.