Ness"ler*ize (?), v. t. [From
Nessler, the chemist.] (Chem.) To treat or test,
as a liquid, with a solution of mercuric iodide in potassium iodide
and potassium hydroxide, which is called Nessler's solution or
Nessler's test, and is used to detect the presence of
ammonia.