Abbreviation of עֶזְרִי מֵעִם יהוה עֹשֵׂה שָׁמַיִם וָאָרֶץ (“My help is from God, maker of heaven and earth.”), which is from Psalm 121:2.
עמ״י עש״ו • (transliteration needed)
- (Judaism) Used to acknowledge God's assistance.
- Used on the heading of written works. Also used are בס״ד and ב״ה.