Ulcer
来自Big Physics
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late Middle English: from Latin ulcus, ulcer- .
wiktionary
From Old French ulcere, from Latin ulcus. Doublet of ulcus.
etymonline
ulcer (n.)
c. 1400, from Old French ulcere, from Vulgar Latin *ulcerem, from Latin ulcus (genitive ulceris) "ulcer, a sore," figuratively "painful subject," from PIE *elk-es- "wound" (source also of Greek elkos "a wound, sore, ulcer," Sanskrit Related: arsah "hemorrhoids").
