baby boom
noun
ukus [ C ]
a period during which there is a big increase in the number of births, especially used to refer to the period in the UK and US between approximately 1945 and 1965:
China experienced a baby boom after the Communist Party came to power in 1949.
post-war baby boom
baby-boom
adjective [ before noun ]
Health care costs are rising in an era of a growing and ageing baby-boom generation.