The story
From al(pha-methyl) + chlo(ro)- + -metasone (“prednisone or prednisolone derivative”).
Etymology from Wiktionary, CC BY-SA 4.0.
alclometasone
Today it means: A synthetic glucocorticoid steroid used as an anti-inflammatory, antipruritic, antiallergic, antiproliferative and vasoconstrictive agent. Full definition →