To make (the soil) more fertile by adding nutrients to it. / (figuratively) To make more creative or intellectually productive. / To cause to produce offspring through insemination; to inseminate.

plural of fertilizer

plural of fertility

A city and town in Iowa. / A city and town in Minnesota.

(of a plant) Capable of self-fertilization.

plural of fertility drug

A drug that improves fertility.

(historical) A crescent-shaped strip of fertile land stretching from present-day Iraq through eastern Turkey and down the Syrian and Israeli coasts.

Fertilization by the union of gametes of different plants (sometimes of different species). / (by extension) The mutual exchange of ideas or concepts from different fields for mutual benefit.

To undergo (or cause to undergo) cross-fertilization.