blasphemyn.[L. blasphemia, Gr. : cf. OF. blasphemie.]1. An indignity offered to God in words, writing, or signs; impiously irreverent words or signs addressed to, or used in reference to, God; speaking evil of God; also, the act of claiming the attributes or prerogatives of deity.()()2. Figuratively, of things held in high honor: Calumny; abuse; vilification.()Punished for his blasphemy against learning. (Bacon.)