0 Old HSK word(s):
开方子* *

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

开 open / initiate, begin, start
方 a square, rectangle / a region / local
子 offspring, child / fruit, seed of / 1st terrestrial branch

Hsk Characters:
HSK -Characters and beyond:
GbBig5EngRadMegaTripleMultilingual