adj. 1 of, characteristic of, or appropriate to autumn (autumnal colours). 2 occurring in autumn (autumnal equinox). 3 maturing or blooming in autumn. 4 past the prime of life.
[ L autumnalis (as AUTUMN, -AL) ]
AUTUMNAL
Meaning of AUTUMNAL in English
Concise Oxford English dictionary. Краткий оксфордский словарь английского языка. 2012