Nisan Nisaean • nisei · · · Info · Definitions · Characters · · Nisan · · Text Latin · · Script 5 · · Length Definitions · · · (noun) the seventh month of the civil year; the first month of the ecclesiastic year (in March and April). Synonyms: Nissan. · · Noun Definition 1 Characters · · N latin capital letter n U+004E a latin small letter a U+0061 i latin small letter i U+0069 n latin small letter n U+006E s latin small letter s U+0073