(definition) by Webster 1913 Wed Dec 22 1999 at 3:03:24

Ses`qui*ter"tian (?), 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).

© Webster 1913.

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