- Astrol. the aspect of two celestial bodies 72°, or one fifth of a circle, apart
- any of the values in a series dividing the distribution of the individuals in the series into five groups of equal frequency
- any of these groups
Origin of quintilefrom Classical Latin quintus, a fifth (see quintet) + -ile
- The astrological aspect of planets distant from each other by 72° or one fifth of the zodiac.
- Statistics a. Any of the groups that result when a frequency distribution is divided into five groups of equal size.b. Any of the values that separate each of these groups.
Origin of quintileLatin quīntus fifth ; see penkwe in Indo-European roots. -ile (as in quartile )