(biology) A set of organisms in which any pair of members can breed together, i.e. exchange gametes to produce fertile offspring.

(religion) The central religious text in LaVeyan Satanism.

(organic chemistry) A halogenated hydrocarbon, CHBrClF, that is used in some fire extinguishers; its chirality is the basis of the Cahn-Ingold-Prelog rules

(informal, uncommon) Acronym of sensitive new age guy.