O

·noun A cipher; zero.

II. O ·adj One.

III. O ·noun The letter O, or its sound.

O
O, o, the fourteenth letter of the Latin alphabet, corresponding to the Gr. ο and ω. The Latin langu...

A New Latin Dictionary by Charlton T. Lewis Ph.D. and Charles Short, LL. D.
o
ō (long also before an initial vowel: I o ego, Ov. M. 8, 51; Hor. A. P. 301; but also short: ŏ...

A New Latin Dictionary by Charlton T. Lewis Ph.D. and Charles Short, LL. D.
o
ō (rarely, before a vowel o, V.), interj.of feeling or surprise, O! oh!: O vir fortis es, T.:...

An Elementary Latin Dictionary