Radioactive Synthetic Element, Atomic No. 105
This page is the CodyCross answer for the clue below from Architectural Styles, Group 1169, Puzzle 5 (Neoclassical).
Question is: Radioactive Synthetic Element, Atomic No. 105
and the answer is: DUBNIUM
Word Meaning:
DUBNIUM — A transuranic chemical element (symbol Db) with atomic number 105.
Definitions from Wiktionary.