עִיּוּן, (עוּן) speculation, meditation, deliberation; ע׳ תפלה a) calculation of the effects of prayer, expectation of the granting of one’s prayer as a due claim (v. עוּןPi.). Ber. 55ᵃ שלשה דברים … וע׳ ת׳ וכ׳ three things cause a man’s record of sins to be called up: a threatening wall, calculation on prayer &c., v. דִּין II. B. Bath. 164ᵇ שלש עבירות … וע׳ ת׳ וכ׳ three sins man cannot escape every day: impure thought, calculation on prayer &c.; [oth. opin. the lack of devotion in prayer, v. Tosaf. a. l.].—b) devotion. Sabb. 127ᵃ. Ib. 118ᵇ קיימית ע׳ ת׳ I fulfilled (guarded the duty of) devotion in my prayers. B. Bath. l. c., v. supra.