Quintilis

Learned borrowing from Latin Quīntīlis (“Fifth Month”).

Quintilis

1. (historical) The month of the ancient Roman calendar which became July, the fifth month when the year began with March and the seventh after it began with January.

• July; Julius (uncommon); Quintile (obsolete)

• Quint., quint. (abbreviation)
• Quinctilis, quinctilis, quintilis

From quīntus (“fifth”) +‎ -īlis, due to its position in the Roman calendar prior to the establishment of Iānuārius (“January”) as the first month. As a noun, ellipsis of Quīntīlis mēnsis m (“fifth month”).

• (Classical Latin) IPA^(key): [kʷiːnˈtiː.lɪs]
• (modern Italianate Ecclesiastical) IPA^(key): [kʷin̪ˈt̪iː.lis]

Quīntīlis (neuter Quīntīle); third-declension two-termination adjective

1. (historical) of the month of Quintilis (the Roman month following June; renamed July in 44 BC)

   nōnae Quīntīlēs ― the nones of July

   īdibus Quīntīlibus ― on the ides of July

In Classical Latin, month names were regularly used as adjectives, generally modifying a case-form of mēnsis m sg (“month”) or of one of the nouns used in the Roman calendar to refer to specific days of the month from which other days were counted: Calendae f pl (“calends”), Nōnae f pl (“nones”), Īdūs f pl (“ides”). However, the masculine noun mēnsis could be omitted by ellipsis, so the masculine singular forms of month names eventually came to be used as proper nouns.^[1]

The accusative plural adjective forms Aprīlīs, Septembrīs, Octōbrīs, Novembrīs, Decembrīs^[2] are ambiguous in writing, being spelled identically to the genitive singular forms of the nouns; nevertheless, the use of ablative singular forms in -ī and comparison with the usage of other month names as adjectives supports the interpretation of -is as an accusative plural adjective ending in Classical Latin phrases such as "kalendas Septembris".^[3]

Third-declension two-termination adjective.

Quīntīlis m sg (genitive Quīntīlis); third declension

1. (historical) the month of Quintilis

Third-declension noun (i-stem, ablative singular in -ī).

• Iūlius, iūlius
• Jūlius, jūlius

• → English: Quintilis (learned)

• Roman calendar on Wikipedia.Wikipedia

• “Quintilis”, in Charlton T. Lewis and Charles Short (1879) A Latin Dictionary, Oxford: Clarendon Press
• Quintilis in Gaffiot, Félix (1934) Dictionnaire illustré latin-français, Hachette, page 1302/3.
• Quintilis in Georges, Karl Ernst, Georges, Heinrich (1913–1918) Ausführliches lateinisch-deutsches Handwörterbuch, 8th edition, volume 2, Hahnsche Buchhandlung, column 2171