- rare of or occurring in summer
WordReference Random House Unabridged Dictionary of American English © 2026
aes•ti•val
(es′tə vəl, e stī′- or, esp. Brit., ē′stə-, ē stī′-),USA pronunciation adj.
- estival.
Collins Concise English Dictionary © HarperCollins Publishers::
aestival, US estival /iːˈstaɪvəl; ˈɛstɪ-/ adj
'aestival' also found in these entries (note: many are not synonyms or translations):