noun🔗Share出生率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"The birthrate in the city has been declining steadily for the past five years. "過去5年間、その都市の出生率は着実に低下しています。statisticssocietynumberfamilyChat with AIVocabulary GamePractice Reading