Having an atomic number greater than 92. (adjective)
American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Use "transuranic" in a sentence
"It includes low-level waste and debris that is classified as transuranic waste because it is contaminated with plutonium."
"Department of Energy held a briefing in Greene County about the "transuranic" radioactive waste shipments that will start in July"
"Overall, there are roughly 400,000 cubic feet of plutonium-contaminated [ "transuranic"] waste housed at the facility, much of it generated by LANL's own nuclear weapons activities."