(mathematics) A continued fraction with a sequence of numerators and denominators that repeat indefinitely

(biochemistry) The biochemistry of cells, especially that of the macromolecules responsible for cell structure and function.

(organic chemistry) A chlorofluorocarbon halomethane formerly used as a refrigerant and aerosol spray propellant, now banned in many countries because of its effects on the ozone layer.

Third-person singular simple present indicative form of supervise