The story
- Proto-Indo-European*ters-
- Proto-Indo-European*torséyeti
- Proto-Italic*torseō
- Latintorreō
- Proto-Indo-European*dʰeh₁-
- Latintorridus
- English todaytorrid
From Latin torridus, from torreō (“parch, scorch”).
Etymology from Wiktionary, CC BY-SA 4.0.