Added 9 October 2026 birthrate noun Categories: TimeRare Words noun ! Definition from Wiktionary (CC BY-SA). More about birthrate at Wordnik → Where our words come from → The ratio of total live births to total population for a specific community or nation in a specified period; often expressed in births per thousand per year. Origin From birth + rate. From Wiktionary, via Kaikki.org (CC BY-SA) Related Words: fertilitynatalitybirthworkrate Back to today's word