Wicked Witch of the West

(potash)alum cautery knife change in colo(u)r child audience constant bearing navigation edge into electrical deicer lead someone a merry chase metallic aluminium pseudofermions salleron self-sorption sulphur sensitization superoxidase thread interlacing thymoprivic tunable Raman laser wish someone at the devil you can't make a silk purse out of a sow's ear zero strength temperature