Semicentenarians

Part of speech: noun

Definitions

1. A group of individuals who are each fifty years old, representing a demographic milestone celebrated typically in social contexts
2. Persons reaching the age of fifty, often characterized by a blend of wisdom and life experience, marking their semicentennial year
3. Individuals at the midpoint of a century, each having lived for five decades and often celebrated during this significant age milestone

Etymology: "Semicentenarians" is the plural of "semicentenarian," a person who has reached fifty years of age. The singular is built from "semicentenary," a fiftieth anniversary, with the suffix "-ian" meaning "person," and it is equivalent to "semi-" (half) plus "centenarian," a person aged one hundred, which comes from the Latin "centenarius," meaning "containing a hundred."