bibliothecarial Get Printable Handwriting Hear It! Say It! Write It! Learn It! Spelling Test Definition adjective. relating to librarians or libraries. Example Sentence A growing amount of bibliothecarial information originates from the Internet. More Example Sentences She enjoyed her bibliothecarial duties each day. Synonyms library; librarian; bookish Hear It! Say It! Write It! bibliothecarial Switch to cursive Start Share with your friends: