idem
pronoun
ˈī-ˌdem 
ˈē-
ˈē- ˈi-
: the same as something previously mentioned —used chiefly in bibliographies
Word History
Etymology
Middle English, from Latin, same — more at identity
First Known Use
before the 12th century, in the meaning defined above
Legal Definition
idem
pronoun
ˈī-dəm, ˈē-dem
: something previously mentioned : the same authority —used in citations to cases and other works to refer to an immediately preceding reference compare infra, supra
Note: Idem is usually used in the form of its abbreviation id.