Swelling
来自Big Physics
Old English swellan (verb), of Germanic origin; related to German schwellen . Current senses of the noun date from the early 16th century; the informal adjectival use derives from noun swell (sense 5 of the noun) (late 18th century).
etymonline
swelling (n.)
"tumor, morbid enlargement," Old English; verbal noun from swell (v.).
