非空

Traditional form:

非空

Pinyin (reading):

fēikōng

Definitions:

• nonempty (set)

Characters:

• 非 - not, negative, non-; to oppose
• 空 - hollow, empty, deserted, bare

Traditional characters:

• 非 - not, negative, non-; to oppose
• 空 - hollow, empty, deserted, bare