noun Belief in the existence of at least one deity.
noun Belief in the existence of a personal creator god, goddess, gods and/or goddesses present and active in the governance and organization of the world and the universe. The God may be known by or through revelation.
noun A morbid condition resulting from excessive consumption of tea.
noun ↑ William Dwight Whitney, Benjamin Eli Smith, editors (1895–1910), “theism”, in The Century Dictionary […], New York, N.Y.: The Century Co., →OCLC.
noun ↑ “theism, n.2”, in OED Online , Oxford: Oxford University Press, 2015-03-18.
noun ↑ George M. Gould with R. J. E. Scott (1919), “theism”, in The Practitioner's Medical Dictionary, 3rd rev. and enl. edition, Philadelphia, Pa.: P. Blakiston's Son, →OCLC, page 883.