centenarianism
The state of being at least 100 years of ageThe state of being at least 100 years of age.
Meaning
1 senses(uncountable)The state of being at least 100 years of age.
Alleged cases of centenarianism in early censuses were difficult to verify.
Origin
From centenarian + -ism.From centenarian + -ism.
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Lessons for this word
1 lessons- A1Countable and uncountable nouns — Because it can be uncountable