oxybutynin
noun
oxy·bu·ty·nin
| \ ˌäk-sē-ˈbyüt-ᵊn-ən
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Medical Definition of oxybutynin
: an antispasmodic and anticholinergic drug C22H31NO3 administered transdermally as a skin patch or orally in the form of its hydrochloride C22H31NO3·HCl to relax the smooth muscles of the bladder in the treatment of urge incontinence, frequent urination, and urinary urgency