Added 10 October 2026 sunstroke /ˈsʌnˌstɹoʊk/ noun Categories: Describing WordsRare Words In Latin: sīriāsis Wiktionary noun ! Definition from WordNet 3.1, Princeton University. Pronunciation from Wiktionary, via Kaikki.org. More about sunstroke at Wordnik → Where our words come from → Sudden prostration due to exposure to the sun or excessive heat. Related Words: insolationsiriasisthermoplagiasun-feversunburnsunfeversuntanheliosis Back to today's word