涡核

Traditional form:

渦核

Pinyin (reading):

wōhé

Definitions:

• eye of a vortex

Characters:

• 涡 - eddy, swirl, whirlpool
• 核 - core, kernel; nut, seed; atom

Traditional characters:

• 渦 - eddy, swirl, whirlpool
• 核 - core, kernel; nut, seed; atom