Jenkinsonian UK /ˌd͡ʒɛŋ.kɪnˈsəʊ.ni.ən/US /ˌd͡ʒɛŋ.kɪnˈsoʊ.ni.ən/ adjective1 •Of or relating to Sir Charles Hilary Jenkinson (1882-1961), British archivist and archival theorist. formsmore Jenkinsonian · most Jenkinsonian