The Collaborative International Dictionary
Sesquitertianal
Sesquitertian \Ses`qui*ter"tian\, Sesquitertianal \Ses`qui*ter"tian*al\, a. [Sesqui- + L. tertianus belonging to the third. Cf. Tertian.] (Math.) Having the ratio of one and one third to one (as 4 : 3).