Abbreviations

O

O = Old
obs. = obsolete
ocn. = ocean
Oct. = October
ODan. = Old Danish (before 1400 AD)
OE = Old English (before 1150 AD)
OEM = original equipment manufacturer
OF = Old French (before 1400 AD)
OHG = Old High German (before 1100 AD)
Okla. = Oklahoma
ON = Old Norse (before 1500 AD)
Oreg. = Oregon
org. = organization
orig. = original, originally
ornithol. = ornithology
OSp. = Old Spanish (before 1500 AD)

Try another?

A - B - C - D - E - F - G - H - I - J - K - L - M - N - O - P

Q - R - S - T - U - V - W - X - Y - Z - Numbers - Symbols