An imaginary point situated where a planet's axis intersects the celestial sphere.

A product obtained by reacting plant fibres with caustic soda; it is used in the production of viscose fibres.

Former name of Sulawesi.

A semiconductor device that converts the radiant energy of sunlight into electrical energy

A transducer that generates an electric current proportional to the light intensity.

A loop of moving fluid (such as air or water) in which the motion results from differences in density caused by differences in temperature.

plural of celestial body

Alternative spelling of T cell (especially when used in attributive position)

A person who officiates at a religious ceremony, especially a marriage or the Eucharist.

(medicine, biology) The condition of individual cells in a patient suffering from chronic dehydration.