(nautical) ore/oil ; designating that a ship can carry both ore and oil

Abbreviation of owned and operated.

A linking vowel inserted interconsonantally between two morphemes, to ease pronunciation, without contributing to the meaning. It frequently joins words or combining forms of Ancient Greek or Classical Latin origin in the classical compounds of New Latin and international scientific vocabulary, but it can also be used to join modern terms and even abbreviations, either formally or informally.

(pharmacology) a monoclonal antibody derived from a murine source

(stenoscript) (a) an initial letter ⟨o⟩

The fifteenth letter of the English alphabet, called o and written in the Latin script.

The name of the Latin-script letter O. / A zero (used in reading out numbers).

The ordinal number fifteenth, derived from this letter of the English alphabet, called o and written in the Latin script.

Alternative form of oh

(nonstandard) alternative form of O (vocative particle)