Definition of registered in English:
registered
adjective ˈrɛdʒɪstədˈrɛdʒəstərd
1Entered or recorded on an official list or directory.
- 1.1 (of a letter or parcel) sent by registered post.
we have sent registered letters to all her addresses but there has been no response
Definition of registered in US English:
registered
adjectiveˈrejəstərdˈrɛdʒəstərd
1Entered or recorded on an official list or directory.
- 1.1 (of a letter or parcel) sent by registered mail.
we have sent registered letters to all her addresses but there has been no response