Plural of 'dol', a unit of measurement for pain intensity used in medical and psychological research.
From 'dol' (unit of pain), coined in the early 20th century from Latin 'dolor' (pain). The acronym stands for 'dolor units' in medical contexts.
Doctors and pain researchers actually tried to create a scientific scale for pain using 'dols,' but it never caught on because pain is so subjective—imagine if your doctor had said 'you're experiencing 5 dols of pain' instead of asking 'on a scale of 1-10...'!
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