0 Old HSK word(s):
辐射线* *

Definitions from Unihan Copyright © 1991-2015 Unicode® Inc. All rights reserved.

辐 spokes of wheel
射 shoot, eject, issue forth, emit
线 line, thread, wire / clue

Hsk Characters:
HSK -Characters and beyond:
GbBig5EngRadMegaTripleMultilingual