quadragenarian

[ kwod-ruh-juh-nair-ee-uh n ]
/ ˌkwɒd rə dʒəˈnɛər i ən /

adjective

40 years of age.
between the ages of 40 and 50.

noun

a person who is 40 years old or whose age falls between 40 and 50.

RELATED WORDS

Origin of quadragenarian

1830–40; < Latin quadrāgēnāri(us) consisting of forty (quādrāgēn(ī) forty each + -ārius -ary) + -an
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

British Dictionary definitions for quadragenarian

quadragenarian

/ (ˌkwɒdrədʒɪˈnɛərɪən) /

noun

a person who is between 40 and 49 years old

adjective

being from 40 to 49 years old

Word Origin for quadragenarian

C19: from Latin quadrāgēnārius consisting of forty, from quādrāgintā forty
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012