fertilest

Adjective

fertile (comparative more fertile, superlative most fertile)

1. Of land, etc.: capable of growing abundant crops; productive.
   • Taking advantage of the river's fertile floodplain, residents of the town of Skardu cultivate apricot, apple, and peach orchards in the sandy soil.1987 October, Galen Rowell, “Baltistan: The 20th Century Comes to Shangri-la”, in National Geographic, volume 172, number 4, page 529

   Synonyms:

   fat

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

   Synonyms:

   productive, prolific, pregnant, batful, luxuriant, fruitful, thriving, yielding, yieldly, voluminous

3. Capable of reproducing; fecund, fruitful.
   • Most women at the age of fifty are not fertile.

   Synonyms:

   childing

   Antonyms:

   barren, infertile, sterile

4. Capable of developing past the egg stage.
5. 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.

See all 7 meanings of fertile