/ree'keuhn struk"sheuh niz'euhm/ , n.
a 20th-century movement among U.S. Jews, founded by Rabbi Mordecai M. Kaplan, advocating that Judaism, being a culture and way of life as well as a religion, is in sum a religious civilization requiring constant adaptation to contemporary conditions so that Jews can identify more readily and meaningfully with the Jewish community.
[ 1940-45; RECONSTRUCTION + -ISM ]