Noun

1. English physiologist who, with Alan Hodgkin, discovered the role of potassium and sodium ions in the transmission of the nerve impulse (born in 1917)

2. English writer; grandson of Thomas Huxley who is remembered mainly for his depiction of a scientifically controlled utopia (1894-1963)

3. English biologist and a leading exponent of Darwin's theory of evolution (1825-1895)