Mor. sol., more solito, in the usual way.
Ne tr. s. num., ne tradas sine nummo, do not deliver it without the money.
No., numero, in number.
N. M., nux moschata, a nutmeg.
O., octarius, a pint.
Ol. lini s. i., oleum lini sine ligné, cold-drawn linseed oil.
Omn. hor., omni horâ, every hour.
Omn. bid., omni biduo, every two days.
Omn. bih., omni bihorio, every two hours.
O. M., or omn. man., omni mane, every morning.