fertility

n. fecundity, reproductivity, fruitfulness

Fertility is the natural capability of giving life. As a measure, "Fertility Rate" is the number of children born per couple, person or population. This is different to fecundity, which is defined as the potential for reproduction (influenced by gamete production, fertilisation and carrying a pregnancy to term). In the English language, the term was originally applied only to females, but increasingly is applied to males as well, as common understanding of reproductive mechanisms increases and the importance of the male role is better known. Infertility is a deficient fertility.
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Fertility /fer·til·i·ty/ 1. the capacity to conceive or induce conception.fer´tile 2. see under rate. fer·til·i·ty n. [more]Fertility - Community and Resources

Noun
1. the ratio of live births in an area to the population of that area; expressed per 1000 population per year
(synonym) birthrate, birth rate, fertility rate, natality
(hypernym) rate
2. the state of being fertile; capable of producing offspring
(synonym) fecundity
(antonym) sterility, infertility
(hypernym) physiological state, physiological condition
(attribute) fertile
3. the property of producing abundantly and sustaining growth; "he praised the richness of the soil"
(synonym) richness, prolificacy
(hypernym) fruitfulness, fecundity

The ability to have children.