semicentenarian

English

Etymology

From semicentenary (“50 year, 50th anniversary”) +‎ -ian (“person”), equivalent to semi- (“half”) +‎ centenarian (“100-year-old”), q.v.

Pronunciation

• (General American) IPA^(key): /ˌsɛˌmaɪˌsɛnəˈnɛriən/, /ˌsɛˌmaɪˌsɛntəˈnɛriən/
• (Received Pronunciation) IPA^(key): /ˌsɛmɪsɛntəˈnɛːrɪən/

Noun

semicentenarian (plural semicentenarians)

1. Synonym of fiftysomething: A person celebrating a semicentenary; a person between 50 and 59 years old.

References

• “semi-, prefix”, in OED Online ⁠, Oxford: Oxford University Press, 2022.