A southern English patronymic surname from the given name Simon. / An unincorporated community and coal town in Ohio County, Kentucky, United States.

(chemistry) An organic cheletropic chemical reaction in which a carbenoid reacts with an alkene (or alkyne) to form a cyclopropane.

plural of Simmons-Smith reaction

(mineralogy) A monoclinic-prismatic pale buff cream mineral containing aluminum, fluorine, lithium, and sodium.