/hawl"dayn/ , n.
1. John Burdon Sanderson /berr"dn san"deuhr seuhn/ , 1892-1964, English biochemist, geneticist, and writer.
2. his father, John Scott , 1860-1936, Scottish physiologist and writer.
3. Richard Burdon ( Viscount Haldane of Cloan ), 1856-1928, Scottish jurist, statesman, and writer (brother of John Scott).