,| a cooked mixture of butter or other fat and flour used to thicken sauces, soups, etc. |

Roux , Wilhelm. 1850-1924.
German anatomist who is noted for his research on embryonic development.
Roux (r ) Pronunciation Key
French bacteriologist who assisted Louis Pasteur on most of his major discoveries. Later, working with Alexandre Yersin, he showed that the symptoms of diphtheria are caused by a lethal toxin produced by the diphtheria bacillus. Roux carried out early work on the rabies vaccine and directed the first tests of the diphtheria antitoxin. |