I. adjective 1. relating to or dealing in antiques or rare books. • antiquarian booksellers.
2. relating to the study of antiquities. II. noun a person who studies or collects antiques or antiquities. III. derivatives antiquarianism /ˌantɪˈkwɛːrɪənɪz(ə)m / noun
– origin early 17th cent.: from Latin antiquarius (see antiquary).