obsecration
ob`se`cra´tion
(ǒb`sė`krā´shŭn)n. | 1. | The act of obsecrating or imploring; as, the obsecrations of the Litany, being those clauses beginning with "By." |
2. | (Rhet.) A figure of speech in which the orator implores the assistance of God or man. |
Webster's Revised Unabridged Dictionary, published 1913 by G. & C. Merriam Co.