10 letters · 15 points in Scrabble
noun an antibiotic (trade name Garamycin) that is derived from an actinomycete; used in treating infections of the urinary tract
originAlteration of gentamycin, as a blend of gentian violet + kanamycin, from the color of the actinomycete.
Etymology from Wiktionary, CC BY-SA 3.0