A dramatic increase in fertility rates and in the absolute number of births in the United States, Canada, Australia, and New Zealand during the period following World War II (1947-1961).

coined 1941, from baby (n.) + boom (n.); derivative baby-boomer (member of the one that began 1945) recorded by 1974.

The period from the end of World War II until the early 1960s when the number of births increased significantly, resulting in a population surge characterized as "the baby boom generation."

Definition noun

The people who were born in the United States between 1946 and 1965. This group represented a sharp increase in birth rates and in the absolute number of births compared to pre-1946 levels.

A dramatic post-World War II increase in fertility and birth rates in the United States, Canada, Australia, and New Zealand. Between 1946 and 1964, 76 million American babies were born.

A sudden large increase in the birthrate over a particular period, especially the 15 years after World War II.

A baby boom is a sudden and large increase in the birth rate.

A period of high fecundity during 1945�1965 that occurred because of social optimism after the Second World War.