hibernal adjective.
[hʌɪ'bǝ:n(ǝ)l] Also
hybernal.
E17.[Late Latin hibernalis, from hibernus wintry: see -AL1.]Of, pertaining to, or proper to winter; appearing in winter.
■ D. Mortman She felt a radiating heat within and a hibernal chill without. [TahlilGaran] English Dictionary ▲