Etymology
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bed-wetting (n.)
"involuntary urination while sleeping," 1844, from bed (n.) + present participle of wet (v.). Related: Bed-wetter.
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wet (v.)
Old English wætan "to wet, moisten, water; be or become wet;" see wet (adj.). From mid-15c. as "to intoxicate" (oneself). Meaning "urinate" is by 1925. Related: Wetted; wetting.
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