a tincture of opium (formerly) any medicine of which opium was the main ingredient
WordReference Random House Learner's Dictionary of American English © 2025
WordReference Random House Unabridged Dictionary of American English © 2025
lau•da•num
(lôd′n əm, lôd′nəm),USA pronunciation n.
- a tincture of opium.
- [Obs.]any preparation in which opium is the chief ingredient.
- 1595–1605; origin, originally Medieval Latin variant of ladanum; arbitrarily used by Paracelsus to name a remedy based on opium
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