u.d., ut. dict. means ut dictum - as directed in Prescription
Similar to u.d., ut. dict.
a.u. - auris utraque - both ears aa - ana - of each ad - ad - up to ad lib. - ad libitum - use as much as one desires; freely admov. - admove - apply agit - agita - stir/shake alt. h. - alternis horis - every other hour