(physics) A naturally-occurring radioactive isotope of potassium, ⁴⁰₁₉K, having nineteen protons and twenty-one neutrons, and a half-life of 1.3 billion years; it is the chief source of natural rad...

An unincorporated community in Henry County, Indiana, United States. / A small city, the county seat of Worth County, Missouri, United States. / a neighbourhood on Staten Island, New York City, USA.

plural of liquid mirror

one who studies the Kabbalah