The story
From (ch)lo(ro)- + -sartan (“selective angiotensin receptor antagonist”).
Etymology from Wiktionary, CC BY-SA 4.0.
losartan
Today it means: An antihypertensive drug that is taken orally in the form of its potassium salt C₂₂H₂₂ClKN₆O and blocks the action of the physiologically active form of angiotensin. Full definition →