ann-, anni-, annu-, enn-, enni-

A period of 150 years or occurring every 150 years; relating to or happening after a period of 150 years.

1. To allow someone to retire from a service or an office on a pension because of age or infirmity.
2. To set aside as out of date or to discard as old-fashioned or obsolete; to remove as too old.
3. To be or to become old, out of date, or unfit for further service.

1. Retired because of age or infirmity.
2. Too old for use, work, service, or a position.
3. Antiquated or obsolete: "He had too many superannuated ideas."
4. Outmoded; obsolete; no longer in use or valid or fashionable; such as, superannuated laws.

A retirement, and usually with a pension, because of old age or infirmity.

A supercentenarian is someone who has reached the age of 110 years or more, something achieved by only one in a thousand centenarians.

About one supercentenarian in fifteen lives to 114 years or more. The term has been around from around the 1970s and was further popularized in 1991 by William Strauss and Neil Howe, in their book Generations.

Early references tend to mean simply "someone well over 100" but the 110-and-over cutoff is apparently the accepted criterion by demographers.

1. A year, or an exact day, 300 years after an event, usually one of special historic significance.
2. Coinciding with the 300th anniversary of an event, and often celebrating or commemorating the event.

A 300th anniversary or its celebration.