nonexistence[
`nɑnɪg'zɪstəns]
n. 
存



,

,

存



西
nonexistence[ noun ]the state of not existing<noun.state> 
Nonexistence \Non`ex*ist"ence\, n.
1. The state of not existing; absence of existence; the
negation of being; -- usually used with reference to
existince in the real world, or logical possiblity; as,
the nonexistence of vaporware does not go unnoticed long.
--A. Baxter.
Syn: nonentity[1].
[1913 Webster +PJC]
2. A thing that has no existence. --Sir T. Browne.