Definition from Wiktionary, the free dictionary
tertile (plural tertiles)
- (statistics) Any of the two points that divide an ordered distribution into three parts, each containing a third of the population.
- (statistics) Any one of the three groups so divided.
- The first tertile results include January through April's revenues.
- (statistics): median (2-quantile), tercile/tertile (3), quartile (4), quintile (5), sextile (6), septile (7), octile (8), decile (10), hexadecile (16), ventile/vigintile (20), centile/percentile (100)