i Register
In some senses, rigor is marked as informal, US. Watch for register when choosing this word.
rigor
UK /ˈɹɪɡɚ/ US /ˈɹɪɡɚ/
noun 3name 1
Definitions
noun
1
US spelling of rigour.
2
A feeling of cold with shivering accompanied by a rise in body temperature.
3
Ellipsis of rigor mortis.
Heat always upped the rate at which rigor gripped a corpse.
name
1
A surname from Spanish.
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