OBSECRATION Meaning of OBSECRATION in English [ ˌɒbsɪ'kreɪʃ(ə)n ]■ noun rare earnest pleading or supplication.OriginME: from L. obsecratio(n-) , from obsecrare 'entreat', based on sacer , sacr- 'sacred'. Concise Oxford English vocab. Сжатый оксфордский словарь английского языка. 2004