From Latin Quīntīlis (“Fifth Month”).
Quintile
- (historical, obsolete) Alternative form of Quintilis: the former Roman name of the month July.
- "quintile, n.²", in the Oxford English Dictionary, Oxford: Oxford University Press.
Quīntīle
- ablative singular of Quīntīlis
Quīntīle
- nominative/accusative/vocative neuter singular of Quīntīlis