Aviv (Hebrew: אביב) means "spring (season)" in Hebrew.[1] Aviv is the first month of the year in the Pentateuch,[2] and is later called Nisan in the book of Esther[3] and in subsequent post-exilic history up to the present day. These names are sometimes used interchangeably, although Aviv refers to the three-month season, and Nisan is called the "first month of Aviv." Aviv is also used as a given name, surname, and place name, as in Tel Aviv.