From Longman Dictionary of Contemporary Englishin loco parentisin lo‧co pa‧ren‧tis /ɪn ˌləʊkəʊ pəˈrentɪs $ -ˌloʊkoʊ-/ adverb formal or law SCLFAMILYhaving the responsibilities of a parent for someone else’s child → guardian As a teacher, you should regard yourself as being in loco parentis.Origin in loco parentis (1700-1800) Latin “in the place of a parent”