by appointment meaning

• At a predetermined time

• appointment:    Noun: appointment& ...
• by appointment to:    (added to the name ...
• appointment book:    Noun: appointment ...

Examples

1. he will only see visitors by appointment.
2. we will see you by appointment.
3. consultations can be arranged at other times by appointment.
4. mr . daly saw no one save by appointment
5. group visits to the herbarium can also be arranged by appointment