More about torrid
Torrid “oppressively hot” comes from Latin torridus “dried up, parched,” from the verb torrēre “to parch, burn.” This Latin verb has two stems: torr-, as in torrent, and tost-, which is the source of toast. A popular hypothesis is that torrēre is related to Latin terra “earth,” perhaps originally in the sense “dry land,” which is the source of the recent Word of the Day terrene. Because of Grimm’s law, Latin t tends to correspond to English th, and this is how Latin torrēre is a distant relative of English thirst (from Old English thrust “dryness”). For more on terra, check out the recent Words of the Day testudinate and telluric, and to see Grimm’s law in action, compare togated and transcendental. Torrid was first recorded in English in the 1580s.