extinction

noun

1. the act of extinguishing
causing to stop burning

e.g. the extinction of the lights

Synonym: extinguishingquenching

2. a conditioning process in which the reinforcer is removed and a conditioned response becomes independent of the conditioned stimulus

Synonym: experimental extinction

3. complete annihilation

e.g. they think a meteor cause the extinction of the dinosaurs

Synonym: extermination

4. the reduction of the intensity of radiation as a consequence of absorption and radiation

5. no longer in existence

e.g. the extinction of a species

Synonym: defunctness

6. no longer active
extinguished

e.g. the extinction of the volcano

1. （物种的）灭绝
The extinction of a species of animal or plant is the death of all its remaining living members.

e.g. An operation is beginning to try to save a species of crocodile from extinction...
一项努力拯救一个鳄鱼物种、使其免于灭绝的行动已经开始。
e.g. Many species have been shot to the verge of extinction.
很多物种已经被猎杀到灭绝的边缘。

2. 消亡;消灭;不复存在
If someone refers to the extinction of a way of life or type of activity, they mean that the way of life or activity stops existing.

e.g. The loggers say their jobs are faced with extinction because of declining timber sales.
伐木工人说由于木材销量下降，他们的工作恐不复存在。

1. extinction

1. 灭绝：近日,在福布斯评出的年度名人100榜中,揭示安吉丽...虽然游戏改编的真人电影<>在宣传期间,一度表示这将是系列最后一部电影,并且还以<>(Extinction)为副标题名.

2. 消光：当光波在媒质中传播时,由于光波和物质的相互作用,一般呈现两种效应,一种是速度减慢引起的折射和双折射现象;另一种是光能减弱的消光 (extinction)现象.

3. 消失：处罚(Punishment)行为之产生伴随著一导致未来该行为出现率降低之后果.消失(Extinction)先前作为增强之条件无法再持续其增强作用,

4. 绝灭：在进化型式中,绝灭(extinction)表现为线系的终止,即物种的死亡. 绝灭在进化过程中是一种正常的现象,它影响着进化的速率和进化的趋向. 通常,地史上的大绝灭往往伴随着大的适应辐射,表现为物种及其以上分类单元的替代及替代的规模.