Edda Neele (born 15 December 1910 in Elberfeld, Wuppertal, died 16 February 2005) was a German psychiatrist, and a student and collaborator of Karl Kleist, who worked at the Goethe University Frankfurt Neuropsychiatric Clinic. Along with Karl Leonhard, she was among Kleist's most prolific disciples and contributed significantly to popularizing the terms unipolar (‘einpolig’) and bipolar (‘zweipolig’) that are now used in the concepts of unipolar depression and bipolar disorder, and which had been coined by Kleist. Her 1949 Habilitation dissertation, a study of "cyclical psychoses" admitted to the Frankfurt University Neuropsychiatric Clinic between 1938 and 1942, was the first written publication which used the terms "unipolar disorder" and "bipolar disorder." She was the first woman to wr