centagenarian
English
Etymology
Incorrectly formed by analogy with words like octogenarian (from octōgintā (“eighty”)) and nonagenarian (from nōnāgintā (“ninety”)). However there is no "centaginta"; the correct Latin is centum (“one hundred”)).
Noun
centagenarian (plural centagenarians)
- (nonstandard) A centenarian.