Richard Adolf (ˈrɪçart ˈaːdɔlf). 1865–1929, German chemist, born in Austria, noted for his work on colloidal particles and, with H. Siedentopf, his introduction (1903) of the ultramicroscope: Nobel prize for chemistry 1925
Zsigmondy in American English
(ˈʒɪɡmɔndi)
noun
Richard (ˈʀɪxɑːʀt) 1865–1929, German chemist, born in Austria: Nobel prize 1925