The term 'PETITION DEVOUT' is composed of two words: 'PETITION' and 'DEVOUT'. PETITION is a formal request made to an authority or other person, usually in writing, for some favor, right, or other benefit. DEVOUT is having or showing deep religious feeling or commitment. Together, the term 'PETITION DEVOUT' can be interpreted as a formal request made to a higher power with deep religious feeling or commitment. The crossword solution for this term is 'ORISON', which is a prayer or PETITION to God or a god. Therefore, the term 'PETITION DEVOUT' can be summarized as a prayer or PETITION to God or a god made with deep religious feeling or commitment.