D defs.my
Entry 2 senses Webster, 1913

obsecration

/(ŏb`sē̇*krā"shŭn)/ · ob·se·cra·tion · IPA
01 n. The act of obsecrating or imploring; as, the obsecrations of the Litany, being those clauses beginning with “By.”
  1. 1.
    The act of obsecrating or imploring; as, the obsecrations of the Litany, being those clauses beginning with “By.”
  2. 2.
    A figure of speech in which the orator implores the assistance of God or man.(Rhet.)