a.

1. 睡着的
2. 【生】冬眠的；休眠的
   plants which are dormant

   休眠的植物

   Bears lie dormant during the winter.

   熊在冬季冬眠。

3. 暂停活动的；静止的
   a dormant volcano

   休火山

4. 潜在的；潜伏的

adj.

1. (of an animal) in or as if in a deep sleep.
   ▸Heraldry  (of an animal) lying with its head on its paws.
2. (of a plant or bud) alive but not growing.
3. (of a volcano) temporarily inactive.
4. (of a disease) causing no symptoms but liable to recur.