In later use chiefly with reference to French géométral in the writings of J. M. E. Lacan (1901–81), French psychoanalyst and psychiatrist..
Origin
Late 17th century; earliest use found in Guy Miege (bap. 1644, d.?1718), author and lexicographer. From French géométral from post-classical Latin geometralis from classical Latin geōmetra + -ālis.