diabetes Look up diabetes at Dictionary.com
1560s, from medical L. diabetes, from late Gk. diabetes "excessive discharge of urine" (so named by Aretaeus the Cappadocian, physician of Alexandria, 2c.), lit. "a passer-through, siphon," from diabainein "to pass through," from dia- "through" (see dia-) + bainein "to go" (see come). An old native name for it was pissing evil. In classical Greek, diabainein meant "to stand or walk with the legs apart," and diabetes meant "a drafting compass," from the position of the legs.
diabetic Look up diabetic at Dictionary.com
1799 (adj.), 1840 (n.); see diabetes + -ic.