1889: Richard von Krafft-Ebing: "Heterosexual"

The term heterosexual made four public appearances in the fourth German edition of Dr. Richard von Krafft-Ebing's Psychpathia Sexualis, 1889.

"Heterosexual" appears four times in three different phrases: "heterosexual Empfindung" (heterosexual sensation); "heterosexuale Gefuhle" (heterosexual feeling); and "heterosexualer Verkehr" (heterosexual intercourse). In these phrases the heterosexual refers to emotion and desire, and to an act. It does not yet refer to a person or persons, or their identity.

Through Krafft-Ebing's work the term heterosexual passed into English.[1]

[1] Jonathan Ned Katz, The Invention of Heterosexuality (NY: Dutton, March 1995), p. 54, and n. 56 p. 216, citing Manfred Herzer, "Kertbeny and the Nameless Love," pp. 6, 21 n. 6. The term "heterosexual" appears in the 4th edition of R. von Krafft-Ebing, Psycho-pathia sexualis . . . (Stuttgart: Ferdinand Enke, 1889), 96, 99. Herzer to Katz, July 6, 1983, and April 16, 1989 in Katz Collection, NYPL. Katz thanks James Steakley for help with the German translation.