administrator

UK: /ədˈmɪnɪstreɪtə^r/ US: (ad min′ə strā′tər)

WordReference Random House Unabridged Dictionary of American English © 2025

ad•min•is•tra•tor  (ad min′ə strā′tər), n. 

1. a person who manages or has a talent for managing.
2. Law a person appointed by a court to take charge of the estate of a decedent, but not appointed in the decedent's will.

• Latin administrātor, equivalent. to administrā(re) (see administer) + -tor -tor
• late Middle English 1400–50

ad•min′is•tra′tor•ship′, n. 

Collins Concise English Dictionary © HarperCollins Publishers::

administrator / ədˈmɪnɪˌstreɪtə/ noun

1. a person who administers the affairs of an organization, official body, etc
2. a person authorized to manage an estate, esp when the owner has died intestate or without having appointed executors
3. a person who manages a computer system

WordReference Random House Learner's Dictionary of American English © 2025

ad•min•is•trate /ædˈmɪnəˌstreɪt/   v., -trat•ed, -trat•ing. 

1. to administer.

ad•min•is•tra•tor, n. [countable]

WordReference Random House Unabridged Dictionary of American English © 2025

ad•min•is•trate  (ad min′ə strāt′), v.t., -trat•ed, -trat•ing. 

1. to administer.

• Latin administrātus, past participle of administrāre to administer; see -ate¹
• 1630–40