1. (noun) English biochemist who determined the sequence of amino acids in insulin and who invented a technique to determine the genetic sequence of an organism (born in 1918)

• fred sanger
• frederick sanger

2. (noun) United States nurse who campaigned for birth control and planned parenthood; she challenged Gregory Pincus to develop a birth control pill (1883-1966)

• margaret higgins sanger
• margaret sanger