|tran(t)syə|rānēəm, |traan-, -nzy- adjective
or trans·u·ran·ic -|ranik ; also trans·u·ra·ni·an -|rānēən
Etymology: transuranium from trans- + uranium; transuranic, International Scientific Vocabulary trans- + uran ium + -ic; transuranian, International Scientific Vocabulary trans- + urani um + -an
: having an atomic number greater than that of uranium
the known transuranium elements belong to the actinide series