transuranic
Adjective 1. Having an atomic number greater than 92: Describing a chemical element whose nucleus contains more than 92 protons. All transuranic elements are synthetic (man-made) and are typically unstable, undergoing radioactive decay.
The adjective "transuranic" is used almost exclusively in scientific contexts, particularly in chemistry and nuclear physics, to classify elements. It modifies nouns like "element," "isotope," or "waste." - Plutonium is a well-known transuranic element. - The safe disposal of transuranic waste is a significant challenge. - Scientists are researching the properties of new transuranic isotopes.
- "Transuranic series": Refers to the set of elements beyond uranium in the periodic table.
- "Minor actinides": This is a related technical term often used in nuclear chemistry to refer to a specific group of long-lived transuranic elements (like neptunium, americium, curium) found in spent nuclear fuel.
- Transuranium (adjective): A less common variant with the same meaning, often used in the term "transuranium elements."
- Superheavy elements: A related term for transuranic elements with very high atomic numbers (typically above 103).
- Transuranium (adj.)
- Post-uranium (adj., very rare in technical use)
The term is strictly defined by atomic number. It does not describe chemical properties, stability, or origin, though all known transuranic elements share the traits of being synthetic and radioactive. The sequence of transuranic elements begins with neptunium (atomic number 93).
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having an atomic number greater than 92
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