octogenarian

From French octogénaire (from Latin octōgēnārius (“containing eighty”), from octōgintā (“eighty”)) + -ian.

octogenarian (plural octogenarians)

1. One who is between the age of eighty and eighty-nine, inclusive.
   • 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.

octogenarian (not comparable)

1. Being between the age of 80 and 89, inclusive.
2. Of or relating to an octogenarian.

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