simple past tense and past participle of register
"She registered her complaint at the front desk immediately after realizing the error."
In plain English: To register means to officially sign up for something so it is recorded on a list.
"She registered her car at the local DMV this morning."
(of animals) officially recorded with or certified by a recognized breed association; especially in a stud book
"a registered Percheron"
listed or recorded officially
"record is made of `registered mail' at each point on its route to assure safe delivery"
"registered bonds"
(of a boat or vessel) furnished with necessary official documents specifying ownership etc
"The captain refused to leave the harbor until our fishing trawler was fully registered and had all its official documents in order."
Having had one's name added to an official list or entered into a register
"After she finally submitted her application, her birth was officially registered at the city hall."
In plain English: Registered means officially recorded or signed up for something by an authority.
"We need to register our car before we can drive on the highway."
Usage: Use this adjective when someone has been officially recorded on a formal list, such as voters or students at a school. It implies legal recognition rather than just being signed up for something informal like a newsletter.
Derived from the Latin registratus, the past participle of registrare meaning to register or enroll, it originally referred to something entered into an official record. The term later evolved in English to describe anything officially recorded or noted down by authority.