The average number of children that would be born to a woman over her lifetime if she followed the current average pattern of fertility among a given group of women and survived through her reproductive years; used as an indicator of strength of population growth.

(simile, humorous) Highly fertile.

(horticulture) The ability of a soil to sustain plant growth.

plural of soil fertility

Ability to fertilize itself.

plural of fertility clinic

(obstetrics) A medical clinic that assists couples, and sometimes individuals, who wish to become parents.