ETYMOLOGY
from Latin quadragenarius (forty years old) + -ous
EXAMPLE
“…Tis my fancy that, having won for himself a fortune, he went on in the same resistless way and won for himself a wife: “taking the biggest,” as usual, by cutting out valiantly from under the guns of a dozen rivals some stout buxom widow suited to his estate and to his medium years – one of those plumply mellow quadrigenarious bodies who especially appeal to the vigorous and well-salted emotion which with sailor-men stands for love …”
From: Harper’s New Monthly Magazine, February, 1895
‘New York Colonial Privateers’, By Thomas A. Janvier
Lexicophilia 