The story
From trop- (“atropine derivative”) + -i- + -setron (“serotonin receptor 5-HT₃ antagonist”).
Etymology from Wiktionary, CC BY-SA 4.0.
tropisetron
Today it means: A serotonin 5-HT₃ receptor antagonist used mainly as an antiemetic to treat nausea and vomiting following chemotherapy. Full definition →