the.com/swelter

the slow-roast verb your body invents when the air decides to cook you alive

means To suffer from oppressive, sweaty heat — to feel uncomfortably hot and worn down by it.

from From Middle English 'swelten,' meaning to faint, swoon, or even die — itself from Old English 'sweltan,' to perish. The word carried a heavy weight: to swelter once meant to be overcome to the point of collapse. Over time it cooled (ironically) into the specific sense of being overcome by heat, and the frequentative '-er' ending gave it that lingering, repeated-suffering quality. A distant cousin of 'sultry,' which shares the same overheated root.

old roots
From Old English sweltan, meaning to die or perish
deadly cousin
Same ancestor as sweltry and the rarer sweltering death
sweat science
Humans cool by evaporating up to a liter hourly
wet-bulb limit
At 35C wet-bulb, sweat fails and bodies overheat
for instance

death valley record heat — 134°f (56.7°c) recorded in july 1913, highest reliably recorded temperature on earth

kuwait city 2016 — 54°c (129.2°f) in july 2016, hottest temperature ever reliably recorded in asia

phoenix arizona summer — 143 days above 100°f in 2023, longest extreme heat streak in a us city

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