(chiefly Internet slang) Initialism of correct me if I'm wrong.

(US, military) Abbreviation of comma, used in communication systems without punctuation marks (e.g., telegrams). / (Canada, countable) Initialism of certified management accountant.

Initialism of Consumer and Markets Authority. / Initialism of Country Music Association Awards.

Abbreviation of cubic millimetre.

Abbreviation of commander.

Alternative spelling of Cmdr

(Indo-Aryan linguistics) Initialism of Central Middle Indo-Aryan.

Initialism of cosmic microwave background radiation.

Abbreviation of Cambridgeshire. / Abbreviation of Cumberland.

(coding) Initialism of coded mark inversion.