cogitable

形容词 cogitable:

1. capable of being thought about
   同义词：ponderable

cog.i.ta.ble

adj.（形容词）
Thinkable; conceivable:
可以思考的：能加以思考的；可想象的：
例句：
Since the discovery of the vaccine, annihilation of the disease is at last cogitable.
自从发现疫苗，消灭疾病终于是可以想象的