cm. Centimetres.
c.m., causa mortis=By reason of death.
C.M.G. Companion of the [Most Distinguished] Order of St Michael and St George.
C.M.S. Church Missionary Society.
C.O. Colonial Office; Commanding Officer; Crown Office; Criminal Office.
Co. Cobalt; Company; County.
C/o. Care of.
Coad. Coadjutor.
coch., cochl., cochlear=a spoon, spoonful;—coch. amp., cochlear amplum=a tablespoonful;—coch. mag., cochlear magnum=a large spoonful;—coch. med., cochlear medium=a dessert-spoonful;—coch. parv., cochlear parvum=a teaspoonful.
Cod. Codex.