The story
From rito- (of unknown origin) + -drine (“sympathomimetic”).
Etymology from Wiktionary, CC BY-SA 4.0.
ritodrine
Today it means: A sympathomimetic drug (beta-adrenoreceptor agonist) given by intravenous infusion in the form of its hydrochloride C₁₇H₂₁NO₃·HCl to reduce uterine contractility and arrest premature labor. Full definition →