Definition of "fertile" in English

adjective

1. Of land, etc.: capable of growing abundant crops; productive.

2. (figuratively) Of one's imagination, etc.: active, productive, prolific.

3. Capable of reproducing; fecund, fruitful.

   • Most women at the age of fifty are not fertile.

4. Capable of developing past the egg stage.

5. (physics) Not itself fissile, but able to be converted into a fissile material by irradiation in a reactor.

   • There are two basic fertile materials: uranium-238 and thorium-232.