a.

1. 自動的，自動裝置的
   This washing-machine is fully automatic.

   這臺洗衣機是全自動的。

2. 習慣性的，無意識的
3. 必然的；當然的
   All the employees expect an automatic increase in pay every year.

   所有的員工都期待每年薪水自然增長。

4. 適用於全自動洗衣機的（洗衣粉）

n.[C]

1. 自動機械；自動變速器；自動排檔汽車
2. 自動手槍（或步槍等）

adj.

1. (of a device or process) working by itself with little or no direct human control.
   ▸(of a firearm) self-loading and able to fire continuously.
2. done or occurring without conscious thought.
3. (of a penalty or legal sanction) necessary and inevitable, as a result of a fixed rule or particular set of circumstances.

n.