fertility rate

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun 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.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun the ratio of live births in an area to the population of that area; expressed per 1000 population per year