空集
kōng jí
Pinyin

Definition

空集
 - 
kōng jí
  1. empty set (set theory)

Character Decomposition

Related Words (20)

天空
tiān kōng
  1. 1 sky
收集
shōu jí
  1. 1 to gather
  2. 2 to collect
时空
shí kōng
  1. 1 time and place
  2. 2 world of a particular locale and era
  3. 3 (physics) space-time
有空
yǒu kòng
  1. 1 to have time (to do sth)
空
kōng
  1. 1 empty
  2. 2 air
  3. 3 sky
  4. 4 in vain
空气
kōng qì
  1. 1 air
  2. 2 atmosphere
空虚
kōng xū
  1. 1 hollow
  2. 2 emptiness
  3. 3 meaningless
空调
kōng tiáo
  1. 1 air conditioning
  2. 2 air conditioner (including units that have a heating mode)
  3. 3 CL:臺|台[tái]
空间
kōng jiān
  1. 1 space
  2. 2 room
  3. 3 (fig.) scope
  4. 4 leeway
  5. 5 (astronomy) outer space
  6. 6 (physics, math.) space
航空
háng kōng
  1. 1 aviation
集
jí
  1. 1 to gather
  2. 2 to collect
  3. 3 collected works
  4. 4 classifier for sections of a TV series etc: episode
集中
jí zhōng
  1. 1 to concentrate
  2. 2 to centralize
  3. 3 to focus
  4. 4 centralized
  5. 5 concentrated
  6. 6 to put together
集团
jí tuán
  1. 1 group
  2. 2 bloc
  3. 3 corporation
  4. 4 conglomerate
集体
jí tǐ
  1. 1 collective (decision)
  2. 2 joint (effort)
  3. 3 a group
  4. 4 a team
  5. 5 en masse
  6. 6 as a group
上空
shàng kōng
  1. 1 overhead
  2. 2 in the sky
交集
jiāo jí
  1. 1 intersection (symbol ∩) (set theory)
人去楼空
rén qù lóu kōng
  1. 1 the people are gone and the place is empty (idiom)
  2. 2 the sight of a deserted place brings old friends to mind
  3. 3 the place is deserted
  4. 4 the birds have flown
全集
quán jí
  1. 1 omnibus
  2. 2 complete works (of a writer or artist)
募集
mù jí
  1. 1 to raise
  2. 2 to collect
汇集
huì jí
  1. 1 to collect
  2. 2 to compile
  3. 3 to converge
  4. 4 also written 彙集|汇集[huì jí]

Idioms (20)

一纸空文
yī zhǐ kōng wén
  1. 1 a worthless piece of paper (idiom)
人去楼空
rén qù lóu kōng
  1. 1 the people are gone and the place is empty (idiom)
  2. 2 the sight of a deserted place brings old friends to mind
  3. 3 the place is deserted
  4. 4 the birds have flown
两手空空
liǎng shǒu kōng kōng
  1. 1 empty-handed (idiom); fig. not receiving anything
劈空扳害
pī kōng bān hài
  1. 1 damaged by groundless slander (idiom)
司空见惯
sī kōng jiàn guàn
  1. 1 a common occurrence (idiom)
唱空城计
chàng kōng chéng jì
  1. 1 lit. to sing “The Empty City Stratagem” (idiom)
  2. 2 fig. to put up a bluff to conceal one's weakness
  3. 3 (jocularly) (of a place etc) to be empty
  4. 4 (of one's stomach) to be rumbling
四大皆空
sì dà jiē kōng
  1. 1 lit. the four elements are vanity (idiom)
  2. 2 this world is an illusion
坐吃山空
zuò chī shān kōng
  1. 1 lit. just sitting and eating, one can deplete even a mountain of wealth (idiom)
  2. 2 fig. to spend one's money without generating any income
天低吴楚，眼空无物
tiān dī Wú Chǔ , yǎn kōng wú wù
  1. 1 the sky hangs low over the Yangtze, empty as far as the eye can see (idiom); nothing to see to the broad horizon
天马行空
tiān mǎ xíng kōng
  1. 1 like a heavenly steed, soaring across the skies (idiom)
  2. 2 (of writing, calligraphy etc) bold and imaginative
  3. 3 unconstrained in style
凭空捏造
píng kōng niē zào
  1. 1 fabrication relying on nothing (idiom); frame-up
挖空心思
wā kōng xīn si
  1. 1 to dig for thoughts (idiom); to search everything for an answer
  2. 2 to rack one's brains
海阔天空
hǎi kuò tiān kōng
  1. 1 wide sea and sky (idiom); boundless open vistas
  2. 2 the whole wide world
  3. 3 chatting about everything under the sun
盛况空前
shèng kuàng kōng qián
  1. 1 a magnificent and unprecedented event (idiom)
目空一切
mù kōng yī qiè
  1. 1 the eye can see nothing worthwhile all around (idiom); arrogant
  2. 2 condescending
  3. 3 supercilious
目空四海
mù kōng sì hǎi
  1. 1 the eye can see nothing worthwhile all around (idiom); arrogant
  2. 2 condescending
  3. 3 supercilious
空中楼阁
kōng zhōng lóu gé
  1. 1 pavilion in the air (idiom); unrealistic Utopian construction
  2. 2 castles in Spain
  3. 3 imaginary future plans
空室清野
kōng shì qīng yě
  1. 1 empty room, clean field (idiom); clean out everything to leave nothing for the enemy
  2. 2 scorched earth policy
空洞无物
kōng dòng wú wù
  1. 1 empty cave, nothing there (idiom); devoid of substance
  2. 2 nothing new to show
空无一人
kōng wú yī rén
  1. 1 not a soul in sight (idiom)

Sample Sentences