English

Noun

nobilissimus ‎(plural nobilissimi)

1. A senior title of nobility conferred to members of the Roman and Byzantine imperial families.
   • 1979. Michael Psellus. Fourteen Byzantine Rulers..., p. 146:^[1]

     Changing my manner somewhat, I began with gentle censure of the Nobilissimus.

References

1. ↑ Michael Psellus. Byzantine Rulers: The Chronographia of Michael Penguin Classics 1979, p. 146.

Latin

Adjective

nōbilissimus ‎(superlative of nōbilis)

1. noblest or very noble or famous
   • (Can we date this quote?) Caesar, The Gallic War, I.ii

     Apud Helvetios longe nobilissimus fuit et ditissimus Orgetorix. (By far the noblest and wealthiest man among the Helvetii was Orgetorix.)

2. (New Latin) Used as a specific epithet

Inflection

First/second declension.

References

• NOBILISSIMUS in Charles du Fresne du Cange’s Glossarium Mediæ et Infimæ Latinitatis (augmented edition, 1883–1887)
• Egbert, James Chidester. Introduction to the Study of Latin Inscriptions. American Book Co. 1896, p. 121.
• Allen, William Francis. Latin Lessons, E. Ginn, etc., etc. 1870. p. 77.