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diabetes

/ˌdaɪəˈbiːtiːz/

Metabolic disease causing persistently high blood sugar

From Greek dia (through) + Greek bainein (to go).

noun
dia
Ancient Greek
Verified
dia (διά)
prefix meaning 'through' or 'across'

from Latin diabētēs (“siphon”)

Late Greek
AI-inferred
diabain- / diabainein (διαβαίνειν)
combined with 'to go'; contributes the 'through-passing' sense
Latin
Verified
diabētēs
medical borrowing shaped by Greek usage

from Latin diabētēs (“siphon”)

bainein
Ancient Greek
AI-inferred
bainein (βαίνειν)
to go, step, walk
Ancient Greek
AI-inferred
diabainein (διαβαίνειν)
literally 'to pass through'; also used for a compass stance
Latin
Verified
diabētēs
passed into medical Latin as the name of a draining condition

from Latin diabētēs (“siphon”)

Combined
diabētēs
a Greek medical term, first used by Aretaeus of Cappadocia, for a disease marked by excessive urination
Modern English
Verified
diabetes
now usually refers to diabetes mellitus

from Latin diabētēs (“siphon”)

Modern English
diabetes

A doctor in the Roman East gave this disease a wonderfully vivid name: something that passes through. Aretaeus of Cappadocia, writing in the 2nd century, used the Greek idea of a siphon or a drafting compass—legs spread apart, fluid seeming to rush straight through the body. That image stuck so well that Latin medical writers kept it as diabētēs, and English eventually inherited it as diabetes. The root family is a neat one: the same Greek dia- turns up in diameter and diagnosis, while the walking idea in bainein shows up all over learned English in words like base and ambulate. Old English had a much blunter name for the condition too: pissing evil. Once you know the etymology, diabetes feels less like an abstract label and more like a body that has become a leaky passageway.

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