English

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Etymology

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Kaplan +‎ -ian

Adjective

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Kaplanian (comparative more Kaplanian, superlative most Kaplanian)

  1. Of or relating to Mordecai Kaplan (born Mottel Kaplan; 1881–1983), Lithuanian-born American rabbi, writer, Jewish educator, professor, theologian, philosopher, activist, and religious leader who founded the Reconstructionist branch of Judaism along with his son-in-law Ira Eisenstein.