diapente
The interval of the fifth or the harmonic ratio 3:2.
obsolete
A composition of five ingredients.
obsolete
If the horse be in good fleſh and ſpirits when taken up for its month′s preparation, the diapente muſt be omitted; and the chief buſineſs will be to give him good food, and ſo much exerciſe as will keep him in wind, without overſweating him or exhauſting his ſpirits.
1816, Race-horses, method of preparing for running, entry in Encyclopædia Perthensis, 2nd Edition, Volume 18, page 571,
Where it comes from
From Latin diapente, from Ancient Greek διά (diá, “through, across”) + πέντε (pénte, “five”).
Adapted from the Wiktionary entry diapente (CC BY-SA 4.0).