ozone ozon (#) Fr.: ozone A form of oxygen, O3, in which the molecule is made of three atoms instead of the usual two. See also: From Ger. Ozon, coined in 1840 by Ger. chemist Christian Friedrich Schönbein (1799-1868) from Gk. ozon, neute pr.p. of ozein “to smell.” So called for its peculiar odor. |