noun
empty air; sky
Refers to the physical empty space or the sky. Often used in compound words or literary contexts.
鳥が空を飛んでいる。
A bird is flying in the sky.
noun
emptiness; shunyata
Buddhist term for the concept of emptiness, the lack of intrinsic nature in all phenomena.
仏教では、空の概念が重要です。
In Buddhism, the concept of emptiness is important.
noun
Abbreviation of 空軍 (air force). Used in military contexts.
See also: 空軍
空のパイロットになるのが夢です。
My dream is to become an air force pilot.
noun, na-adjective
fruitlessness; meaninglessness
Describes something as empty, futile, or without substance. Can be used as a noun or adjectival noun.
彼の努力は空に終わった。
His efforts ended in futility.
noun, na-adjective
One of the five elements (五大) in traditional Japanese philosophy, representing void or space.
See also: 五大
五大の一つとして、空は空間を表します。
As one of the five elements, void represents space.
noun which may take the genitive case particle 'no'
Mathematical term for an empty set or empty condition.
空集合は要素を持たない。
The empty set has no elements.
The kanji 空 represents 'sky' or 'empty'. The reading くう is the on'yomi, used in many compound words. The Buddhist sense derives from the Sanskrit concept of śūnyatā.