乳にゅう児じ死し亡ぼう率りつ

noun

infant mortality rate

Technical demographic and public health term; refers to the number of deaths of infants under one year of age per 1,000 live births in a given year.

• 日本にほんの乳にゅう児じ死し亡ぼう率りつは世せ界かいでも低ひくい水すい準じゅんにある。