The story
From halo- + (pi)perid(ine) + -ol. By surface analysis, halo- + -peridol.
Etymology from Wiktionary, CC BY-SA 4.0.
haloperidol
hal·o·per·i·dolToday it means: A synthetic antidepressant drug, with the chemical formula C₂₁H₂₃ClFNO₂, used in the treatment of psychotic conditions. Full definition →