WordReference Random House Unabridged Dictionary of American English © 2025
sol•sti•tial
(sol stish′əl, sōl-),USA pronunciation adj.
sol•sti′tial•ly, adv.
- Astronomyof or pertaining to a solstice or the solstices:a solstitial point.
- Astronomyoccurring at or about the time of a solstice.
- Astronomycharacteristic of the summer solstice.
- Latin sōlstitiālis; see solstice, -al1
- 1550–60
'solstitial' also found in these entries (note: many are not synonyms or translations):