different between centenarian vs octogenarian

English

Etymology

Coined around 1800 as centenary +? -an.

Pronunciation

• IPA^(key): /?s?n.t??n???.i.?n/

Adjective

centenarian (comparative more centenarian, superlative most centenarian)

1. Being at least 100 years old. Beyond one's tenth decade.
2. Of or relating to a centenarian.

Translations

Noun

centenarian (plural centenarians)

1. One who is at least 100 years old. One who is past their tenth decade.

Translations

Derived terms

• supercentenarian

Coordinate terms

• vicenarian
• tricenarian
• quadragenarian
• quinquagenarian
• sexagenarian
• septuagenarian
• octogenarian
• nonagenarian

English

Etymology

From French octogénaire (from Latin oct?g?n?rius (“containing eighty”), from oct?gint? (“eighty”)) + -ian.

Adjective

octogenarian (not comparable)

1. being between the age of 80 and 89, inclusive

   Coordinate terms: vicenarian, tricenarian, quadragenarian, quinquagenarian, hexagenerian, sexagenarian, septuagenarian, nonagenarian, centenarian

2. of or relating to an octogenarian

Translations

Noun

octogenarian (plural octogenarians)

1. One who is between the age of eighty and eighty-nine, inclusive.
   • 1929, Robert Dean Frisbee, The Book of Puka-Puka (republished by Eland, 2019; p. 75f; emphasis in original):

     Mama was by no means the only grandma present, for the octogenarians had turned out en masse from their huts and lean-tos and were paddling about, diving and splashing as unconcernedly as though they really belonged in the sea rather than on land.

   • 1951, IBM Corp., Proceedings, Computation Seminar (page 13)

     To replace logarithmic tables with natural tables required some time. This seems like a modern age, yet I am not an octogenarian and I can remember the dying gasp of the logarithmic table as the standard method of computation. I have seen the desk calculator become a necessary instrument for every scientist who is doing quantitative work.

Translations

Coordinate terms

• denarian
• vicenarian
• tricenarian
• quadragenarian
• quinquagenarian
• sexagenarian
• septuagenarian
• nonagenarian
• centenarian