0 Old HSK word(s):
反应堆* * 核反应堆* *

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

核 seed, kernel, core, nut / atom
反 reverse, opposite, contrary, anti
应 should, ought to, must
堆 heap, pile, crowd / pile up
Hsk Characters:
HSK -Characters and beyond:
GbBig5EngRadMegaTripleMultilingual

Korean:
0 NHSK word(s):
KOREAN6000 word(s):
0 KOREAN 2500 New HSK words):
0 KOREAN Sentence(s):